[Federal Register Volume 80, Number 71 (Tuesday, April 14, 2015)]
[Proposed Rules]
[Pages 19914-19931]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-08342]
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POSTAL SERVICE
39 CFR Part 111
Standards Governing the Design of Curbside Mailboxes
AGENCY: Postal ServiceTM.
ACTION: Notice of proposed revision of standards; invitation to
comment.
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SUMMARY: The Postal Service proposes to replace USPS STD 7B, which
governs the design of curbside mailboxes, with new USPS STD 7C. The
proposed new STD 7C was developed internally to meet the operational
requirements of the Postal Service.
DATES: The Postal Service must receive written comments on or before
June 15, 2015.
ADDRESSES: Comments regarding this proposal are invited. Written
comments should be mailed to U.S. Postal Service, Delivery Operations
ATTN: Ashlea Meyer, 475 L'Enfant Plaza, Room 7142, Washington, DC
20260-7142. Copies of all written comments will be available for public
inspection and copying between 9:00 a.m. and 4:00 p.m., Monday through
Friday, at the address above.
FOR FURTHER INFORMATION CONTACT: Ashlea Meyer, (202) 268-7256.
SUPPLEMENTARY INFORMATION:
Overview
U.S. Postal Service Standard, Mailboxes, City and Rural Curbside,
USPS STD 7B, governs the design of curbside mailboxes. Pursuant to the
Mailing Standards of the United States Postal Service, Domestic Mail
Manual (DMM[supreg]) 508.3.2.1, USPS STD 7B applies to mailboxes
manufactured to be erected at the edge of a roadway or curbside of a
street and to be served by a carrier from a vehicle on any city route,
rural route, or highway contract route. Copies of current STD 7B, or
other information about the manufacture of curbside boxes may be
obtained from USPS Engineering, 8403 Lee Highway, Merrifield, VA 22082-
8101 (see DMM 608.8.0). The current standard, effective February 8,
2001, (66 FR 9509-9522) prescribes designs that in several respects are
no longer ideal for the operational requirements of the Postal Service.
As discussed in more detail below, the Postal Service is proposing
that the design and performance requirements for new versions of both
locking and non-locking curbside mailboxes be included in the proposed
USPS STD 7C. These new design options would be able to accommodate the
insertion and removal of a new minimum-sized mail item 7 inches high by
13 inches wide by 16 inches deep. We believe that instituting these
mailbox design options would allow for improvement in the Postal
Service's capacity for this mode of delivery as vendors choose to
produce these curbside mailboxes, and should the mailboxes come into
widespread use.
The addition of these new design options does not impact the
continued approval status of any current USPS STD 7B mailbox.
Specific New Design Options Proposed in New USPS STD 7C
Options incorporated in the proposed new standard USPS STD 7C
include the following:
1. Introduces for a new version of locked and non-locked mailbox
designs the requirement to accommodate the insertion and removal of a
test gauge measuring 7 inches high by 13 inches wide by 16 inches deep.
This test gauge is the most significant proposed change for the new
mailbox designs. The proposed minimum size requirement will allow for a
much higher delivery rate in the current mail stream.
2. Adds new Figures 1B and 3 for the new enhanced capacity non-
locked and locked mailbox design options. These figures provide overall
design parameters for the two new mailbox design options and the
figures are not mandatory design templates.
3. Introduces, for the new locked mailbox designs only, the
requirement to pass a 3-minute physical security test of the customer
access door (using a specified set of pry tools) and a 3-minute manual
test to ensure that no mail item can be removed through the front
carrier access door. The Postal Service sees value in establishing a
USPS-performed test requirement for this new locked curbside mailbox
design option. Any product validated to meet this requirement would
provide a specified level of security that would be adequate to thwart
quick-strike attacks.
4. Reaffirms the prohibition of any style of locks, locking
devices, or inserts that require the carrier to use a key or restrict
or reduce the interior opening of the mailbox, once the front door has
been fully opened for any approved non-locked curbside mailbox. ``No
mail service'' will continue to be the Postal Service's policy for any
approved non-locked curbside mailbox that has been internally modified
with any of these unapproved add-on products. To assure the
effectiveness of the new minimum parcel capacity requirement under USPS
STD 7C, internal obstructions that prevent this requirement from being
met will result in a suspension of service when the situation is
identified.
5. Introduces minimal door catch and signal flag force tests to
ensure those components meet prescribed limits.
6. Updates the provisions in Sections 6, Application Requirements
and 7, Approval or Disapproval. The
[[Page 19915]]
Application Requirements include a new requirement establishing a 180-
day time limit for the submission of a mailbox for security testing, if
applicable, and final review after the manufacturer has received
approval of a design upon preliminary review. Failure to meet this
deadline will cause the preliminary review approval to be rescinded.
7. Removes the incorporation by reference of certain documents of
the American Society of Quality and replaces the current quality-
related provisions in 3.1 through 3.1.4 of USPS STD 7B with updated
quality requirements in new Section 5, Quality Management System
Provisions.
8. Introduces requirements for use of both USPS and third-party
intellectual property. Manufacturers agree not to use USPS marks
without USPS approval and a license from the USPS. Manufacturers also
have sole responsibility for acquiring all necessary licenses for
third-party intellectual property used. All liability rests with the
manufacturer for use of third-party intellectual property regarding any
USPS approved mailboxes.
Re-Approval of Manufacturers' Curbside Mailboxes
The changes proposed by the new USPS STD 7C would not have any
impact on any currently approved USPS STD 7B product. Any mailbox
manufacturer wishing to seek approval for either or both of the new
locked and non-locked design options introduced by USPS STD 7C would
follow the process detailed in Section 6, Application Requirements of
USPS STD 7C.
Accordingly, for the reasons stated, the Postal Service proposes to
replace USPS STD 7B with USPS STD 7C as set forth in the Appendix to
this document.
Stanley F. Mires,
Attorney, Federal Requirements.
List of Subjects in 39 CFR Part 111
Administrative practice and procedure, Postal Service.
The Postal Service adopts the following changes to Mailing
Standards of the United States Postal Service, Domestic Mail Manual
(DMM), incorporated by reference in the Code of Federal Regulations.
See 39 CFR 111.1.
Accordingly, for the reasons stated in the preamble, 39 CFR part
111 is proposed to be amended as follows:
PART 111--[AMENDED]
0
1. The authority citation for 39 CFR part 111 continues to read as
follows:
Authority: 5 U.S.C. 552(a); 13 U.S.C. 301- 307; 18 U.S.C. 1692-
1737; 39 U.S.C. 101, 401, 403, 404, 414, 416, 3001-3011, 3201- 3219,
3403-3406, 3621, 3622, 3626, 3632, 3633, and 5001.
0
2. Remove U.S. Postal Service Standard 7B and add U.S. Postal Service
Standard 7C in its place to read as follows:
Appendix
U.S. POSTAL SERVICE STANDARD 7C, MAILBOXES, CURBSIDE (USPS STD 7C)
1. Scope and Classification
1.1 Scope--This standard covers all curbside mailboxes. Curbside
mailboxes are defined as any design made to be served by a carrier from
a vehicle on any city, rural, or highway contract route. This standard
is not applicable to mailboxes intended for door delivery service (see
8.1).
1.2 Classifications--Based on their design, curbside mailboxes are
classified as either:
Non-Locked Mailboxes:
T--Traditional--Full or Limited Service (see 3.1.1, 3.1.1.1, and
Figure 1A).
C--Contemporary--Full or Limited Service (see 3.1.1 and 3.1.1.2).
LC--Large Capacity--Full or Limited Service (see 3.1.1, 3.1.1.3,
and Figure 1B).
Locked Mailboxes:
LMS--Locked, Mail Slot Design--Full or Limited Service (see 3.1.2,
3.1.2.1, and Figures 2A and 2B).
LLC--Locked, Large Capacity/USPS Security Tested--Full or Limited
Service (see 3.1.2, 3.1.2.2, and Figure 3).
1.3 Approved Models
1.3.1 Approved Models--A list of manufacturers whose mailboxes have
been approved by the United States Postal Service (USPS) will be
published annually in the Postal Bulletin. A copy of the most current
list of approved models is also available from the office listed in
1.3.2.
1.3.2 Interested Manufacturers--Manufacturing standards and current
information about the manufacture of curbside mailboxes may be obtained
by writing to:
USPS ENGINEERING SYSTEMS, DELIVERY AND RETAIL TECHNOLOGY, 8403 LEE
HIGHWAY, MERRIFIELD, VA 22082-8101
2. Applicable Documents
2.1 Specifications and Standards--Except where specifically noted,
the specifications set forth herein apply to all curbside mailbox
designs.
2.2 Government Document--The following document of the latest issue
is incorporated by reference as part of this standard:
United States Postal Service
Postal Operations Manual (POM)
Copies of the applicable sections of the POM can be obtained from
USPS Delivery and Retail, 475 L'Enfant Plaza SW., Washington, DC 20260-
6200.
2.3 Non-Government Documents--The following documents of the latest
issue are incorporated by reference as part of this standard:
American Standards for Testing Materials (ASTM)
ASTM G85 Standard Practice for Modified Salt Spray (Fog)
Testing
ASTM D968 Standard Test Methods for Abrasion Resistance of
Organic Coatings by Falling Abrasive
Copies of the ASTM documents can be obtained from the American
Society for Testing and Materials, 100 Barr Harbor Drive, West
Conshohocken, PA 19428-2959.
Underwriters Laboratories (UL)
UL 771 Night Depositories (Rain Test Only)
Copies of the UL document can be obtained from Underwriters
Laboratories Inc., 333 Pfingsten Road, Northbrook, IL 60062-2096.
3. Requirements
3.1 General Design--Mailboxes must meet regulations and
requirements as stipulated by USPS collection and delivery, operation,
and policy (see 2.2). This includes carrier door operation (see 3.3),
flag operation (see 3.6), incoming mail openings and the retrieval of
outgoing mail (see below in 3.1). The manufacturer determines the
opening style, design, and size; however, the carrier must be able to
deposit the customer's mail. Outgoing mail for full service designs
must be able to be pulled straight out of the mailbox without
interference from protrusions, hardware, etc. Mailboxes must be capable
of passing the applicable testing requirements (see Section 4).
Mailboxes must not be made of any transparent, toxic, or flammable
material (see 3.2). The mailbox must protect mail from potential water
damage which may result from wet weather conditions (see 4.4). Any
advertising on a mailbox or its support is prohibited. Additional
specific requirements follow.
3.1.1 Non-Locked Designs (Limited and Full Service)--Mailbox
designs that conform to any of the three design types specified in
3.1.1 will be classified as non-locked with the appropriate sub-
designation. Designs incorporating a carrier signal flag (see 3.6) will
be classified as full-service mailboxes. Designs with no flag will be
classified as limited service (see 3.11). As specified in 3.4, a rear
door is permitted
[[Page 19916]]
to enable the customer to remove mail without standing in the street.
The use of any ancillary items (i.e., locks, locking devices, or
inserts) that either require the carrier to use a key to gain access to
a non-locked mailbox or that restrict or reduce the interior opening of
the mailbox, once the front door has been fully opened, is prohibited.
There is no local Postmaster approval exception for this prohibition.
3.1.1.1 Traditional Designs (Limited and Full Service)--Mailbox
designs that conform to Figure 1A and meet the limited capacity
requirements specified in 4.2.1 will be classified as Traditional (T).
3.1.1.2 Contemporary Designs (Limited and Full Service)--Mailbox
designs that do not conform to the dome-rectangular shape of
Traditional designs but meet the limited capacity requirements
specified in 4.2.1, while not exceeding the maximum dimensions of
Figure 1A, will be classified as Contemporary (C).
3.1.1.3 Large Capacity Designs (Limited and Full Service)--Mailbox
designs that conform to Figure 1B and meet the expanded capacity
requirements specified in 4.2.2 will be classified as Large Capacity
(LC).
3.1.2 Locked Designs--Mailbox designs that conform to either of the
two design types specified in 3.1.2 will be classified as Locked with
the appropriate sub-designation.
3.1.2.1 Locked, Mail Slot Designs (Limited and Full Service)--
Mailbox designs that conform to either Figure 2A or 2B and meet the
limited-capacity requirements specified in 4.2.1 will be classified as
Locked, Mail Slot Design (LMS). This locking design option provides
non-USPS-tested security for the customer's incoming mail. Although the
shape and design are less restrictive, these Locked mailbox designs
must meet the same applicable functional requirements. Designs having a
slot for incoming mail must be at least 1.75 inches high by 10 inches
wide. If a slot has a protective flap, it must operate inward to ensure
mail can be inserted in a horizontal manner without requiring any
additional effort by the carriers (see Figure 2B). The slot must be
positioned on the front side of the mailbox facing the street. In
addition, the slot must be clearly visible and directly accessible by
mail carriers. Any designs that allow for outgoing mail must meet all
applicable requirements of this standard.
3.1.2.1.1 Full Service--Locked mailbox designs of this class allow
for both incoming and outgoing mail as depicted in Figure 2A. Both
incoming and outgoing mail functionality must be located behind a
single carrier service door as shown in Figure 2A. While it is
preferred \1\ that the outgoing mail function be handled via use of the
backside of the front door, any alternate use of a separate outgoing
mail compartment, such as beneath or side-by-side with the incoming
mail compartment, is permitted provided that no additional carrier
service is introduced. All designs must allow the carrier direct access
to grasp and retrieve the outgoing mail.
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\1\ The term `preferred' as used throughout this document in
conjunction with any requirement implies that compliance is desired
but not mandatory.
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3.1.2.1.2 Limited Service--Locked mailbox designs of this class
allow only for incoming mail as shown in Figure 2B.
3.1.2.2 Locked, Large Capacity/USPS-Security-Tested Designs
(Limited and Full Service)--Mailbox designs that conform to Figure 3
and meet both the expanded capacity requirements specified in 4.2.2 and
security testing specified in 4.12 will be classified as Locked, Large
Capacity/USPS-Security-Tested (LLC).
3.1.2.2.1 Full Service--Locked mailbox designs of this class allow
for both incoming and outgoing mail as depicted in Figure 3. Both
incoming and outgoing mail functionality must be located behind a
single carrier service door as shown in Figure 3. While it is preferred
\1\ that the outgoing mail function be handled via use of the backside
of the front door, any alternate use of a separate outgoing mail
compartment, such as beneath or side-by-side with the incoming mail
compartment, is permitted provided that no additional carrier service
is introduced. All designs must allow the carrier direct access to
grasp and retrieve the outgoing mail.
3.1.2.2.2 Limited Service--Locked mailbox designs of this class
allow only for incoming mail. Refer to the two Locked mailbox feature
exceptions linked to Note 10 of Figure 3.
3.1.3 Mailbox Accessories--Decorative art and devices can be
attached to the exterior of approved mailbox designs, provided they do
not interfere with mail delivery or present a safety hazard. Devices
can also be mounted in the interior of approved mailboxes, provided
they do not cause the intended mailbox to fail either capacity test
described in 4.2, and do not interfere with mail delivery or present a
safety hazard. Any advertising on a mailbox or its support is
prohibited. Unrestricted spring-loaded devices and designs are
prohibited. Auxiliary flags or devices used to signal the customer that
the mail has arrived must operate automatically without requiring
additional carrier effort.
3.2 Materials--Ferrous or nonferrous metal, wood (restrictions
apply), plastic, or other materials may be used, as long as their
thickness, form, mechanical properties, and chemical properties
adequately meet the operational, structural, and performance
requirements set forth in this standard. Materials used must not be
toxic, flammable or transparent.
3.2.1 Mailbox Floor--The entire bottom area of all mailboxes, where
mail would rest, must be fabricated to prevent mail from damage due to
condensation or moisture. Except for the internal mail compartment of
locked style mailboxes, all designs must not present a lip or
protrusion that would prevent the mail from being inserted or pulled
straight out of the mailbox. The surface of the floor cannot be made of
wood material. The floor must be ribbed as shown in Figures 1A, 1B, 2A,
2B, and 3, or dimpled, embossed, or otherwise fabricated provided the
resulting surface area (touching mail) does not exceed the boundary of
a square with sides of 0.25 inch (per dimple or impression) and is a
minimum of 0.12 inch high on centers not exceeding 1 inch. A mat insert
having a raised surface contour may be used for the internal mail
compartment of locked style mailboxes only (see Figures 2A, 2B, and 3).
3.2.2 Carrier Signal Flag--The carrier signal flag cannot be made
of wood. Plastic is the preferred material.
3.2.3 Door Handle--The door handle cannot be made of wood. Plastic
is the preferred material.
3.3 Carrier Service Door--There must be only one carrier service
door that must provide access for mail delivery and collection at the
unit and meet USPS delivery operational requirements (see 2.2). The
door must meet the applicable testing requirements specified in 4.3.
The carrier service door must operate freely and solely by pulling
outward and downward with a convenient handle or knob. The design of
the door, including hinges and handles must provide protection against
wind, rain, sleet, or snow (see 4.4). Door latches must hold the door
closed but allow easy opening and closing requiring no more than 5
pounds of force. The action of the latch must be a positive mechanical
one not relying solely on friction of the hinge parts. The door must
not be spring-loaded. Magnetic latches are acceptable provided adequate
closure power is maintained during ambient conditions specified in 4.7
and applicable testing described in Section 4. It is preferred
[[Page 19917]]
that by either tactile sensation or sound (i.e., a snap or click)
carriers are alerted that the door is properly shut. The door, once
opened, must remain in the open position until the carrier pushes it
closed. The door must rotate a minimum of 100 degrees when opened and
it is preferred that the maximum rotation be limited to 120 degrees or
less. When in a fully opened and rest position, the opening angle of
the door cannot measure more than 180 degrees. No protrusions other
than the handle or knob, door catch, alternate flag design, decorative
features or markings are permitted on the carrier service door.
Protrusions of any kind that reduce the usable volume within the
mailbox when closed are not acceptable. See 3.1.2 for carrier service
door requirements for Locked mailbox designs.
3.3.1 Handle or Knob--The handle or knob must have adequate
accessibility to permit quickly grasping and pulling it with one hand
(with or without gloves) to open the door. The handle or knob must be
located within the top \1/3\ of the door. Various acceptable handle and
knob designs with required dimensions are depicted in Figure 5. Other
designs may be acceptable provided they allow enough finger clearance
and surface area for carriers to grasp.
3.4 Rear Doors--Both locking and non-locking mailbox designs may
have rear doors.
3.4.1 Non-Locking Mailbox Designs--These mailbox designs may have a
rear door, provided that it does not interfere with the normal delivery
and collection operation provided by the carrier, require the carrier
to perform any unusual operations, or prevent the applicable capacity
test gauge from fully inserting. The rear door must not be susceptible
to being forced open as a result of large mail items such as newspapers
and parcels being inserted through the carrier service door. The rear
door must meet the applicable testing requirements specified in 4.
3.4.2 Locking Mailbox Designs--These designs must have a customer
access door that may be located as shown in Figures 2A, 2B, and 3 on
the rear wall of the mailbox. However, for locking mailbox designs, the
customer access door may be located on a side wall. For locking designs
submitted for approval under 3.1.2.2, this door must be subject to the
security test requirement in 4.12.
3.5 Locks--Locked mailbox designs, which are submitted for approval
under 3.1.2.2, must meet the security test requirements of 4.12 to
ensure that incoming mail is accessible only by the customer to the
performance level required. The use of locks on all non-locked mailbox
designs is prohibited. Manufacturers must include the following
statement in their instructions to customers:
IT IS IMPORTANT TO NOTE THAT IT IS NOT THE RESPONSIBILITY OF MAIL
CARRIERS TO OPEN MAILBOXES THAT ARE LOCKED, ACCEPT KEYS FOR THIS
PURPOSE, OR LOCK MAILBOXES AFTER DELIVERY OF THE MAIL.
3.6 Carrier Signal Flag--Non-locked and locked mailbox designs
classified as Full Service must have a carrier signal flag. While it is
preferred that the flag design be one of the approved concepts depicted
in Figures 1A, 1B, 2A, 3, and 4, alternates will be considered for
approval if all other dimensional and test requirements are otherwise
met. As shown in each figure, the flag must be mounted on the right
side when facing the mailbox from the front. The flag must not require
a lift of more than 2 pounds of force to retract. Additionally, when
actuated (signaling outgoing mail), the flag must remain in position
until retracted by the carrier. The color of the flag must be in
accordance with the requirements described in 3.9. The operating
mechanism of the flag must not require lubrication and must continue to
operate properly and positively (without binding or excessive free
play) after being subjected to the test described in Section 4.
Optionally, the flag may incorporate a self-lowering feature that
causes it to automatically retract when the carrier service door is
opened provided no additional effort is required of the carrier. The
self-lowering feature cannot present protrusions or attachments and
must not interfere with delivery operations in any manner or present
hazardous features as specified in 3.1.
3.7 Marking--The mailbox must bear two inscriptions on the carrier
service door: ``U.S. MAIL'' in a minimum of 0.50 inch-high letters and
``Approved By The Postmaster General'' in a minimum of 0.18 inch-high
letters. These inscriptions may be positioned beneath the incoming mail
slot for Limited Service Locked (Mail Slot Design) mailboxes as shown
in Figure 2B. Markings must be permanent and may be accomplished by
applying a decal, embossing on sheet metal, raised lettering on
plastic, engraving on wood or other methods that are suitable for that
particular unit. The manufacturer's name, address, date of manufacture
(month and year), and model number or nomenclature must be legible and
permanently marked or affixed on a panel (rear, backside of door,
bottom or side interior near the carrier service door) of the mailbox
that is readily accessible and not obscured.
3.7.1 Modified Mailbox Marking--Mailboxes that use previously
approved units in their design must include marking stating the new
manufacturer's name address, date of manufacture, and model
nomenclature in a permanent fashion and location as described in 3.7.
Additionally, the ``U.S. MAIL'' and ``Approved By The Postmaster
General'' marking must be reapplied if it is obscured or obliterated by
the new design.
3.8 Coatings and Finishes--The choice of coatings and finishes is
optional, provided all requirements of this standard are met. All
coatings and finishes must be free from flaking, peeling, cracking,
crazing, blushing, and powdery surfaces. Coatings and finishes must be
compatible with the mailbox materials. Except for small decorative
accents, mirror-like coatings or finishes are prohibited. The coating
or finish must meet the applicable testing requirements described in
4.6.
3.9 Color--The color of the mailbox and flag must be in accordance
with the requirements stated in 3.9. The mailbox may be any color. The
carrier signal flag can be any color except any shade of green, brown,
white, yellow or blue. The preferred flag color is fluorescent orange.
Also, the flag color must present a clear contrast with predominant
color of the mailbox.
3.10 Mounting--The mailbox must be provided with means for
convenient and locked mounting that meets all applicable requirements.
The manufacturer may offer various types of mounting accessories, such
as a bracket, post or stand. Although the Postal Service does not
regulate the design of mounting accessories, no part of the mounting
accessory is permitted to project beyond the front of the mounted
mailbox. Mounting accessories must not interfere with delivery
operations as described in 3.1.3 or present hazardous features as
described in 3.13. See Section 8 for additional important information.
3.11 Instructions and Product Information
3.11.1 Assembly and Installation--A complete set of instructions
for assembling and mounting the mailbox must be furnished with each
unit. The instructions must include the following conspicuous message:
CUSTOMERS ARE REQUIRED TO CONTACT THE LOCAL POST OFFICE BEFORE
INSTALLING THE MAILBOX TO ENSURE ITS CORRECT PLACEMENT AND HEIGHT AT
THE STREET. GENERALLY, MAILBOXES ARE INSTALLED AT A HEIGHT OF
[[Page 19918]]
41-45 INCHES FROM THE ROAD SURFACE TO EITHER THE INSIDE SURFACE OF THE
MAILBOX THAT THE MAIL IS PLACED ON BY THE CARRIER OR TO THE LOWEST EDGE
OF MAIL ENTRY (FOR LOCKED MAIL SLOT DESIGNS) AND ARE SET BACK 6-8
INCHES FROM THE FRONT FACE OF CURB OR ROAD EDGE TO THE MAILBOX DOOR.
3.11.2 Limited Service Mailboxes--The following conspicuous note
must be included with each mailbox:
THIS IS A LIMITED SERVICE MAILBOX (WITHOUT FLAG) AND IT IS INTENDED
ONLY FOR CUSTOMERS WHO DO NOT WANT POSTAL CARRIERS TO PICK UP THEIR
OUTGOING MAIL. UNLESS POSTAL CARRIERS HAVE MAIL TO DELIVER, THEY WILL
NOT STOP AT LIMITED SERVICE MAILBOXES.
3.12 Newspaper Receptacles--A receptacle for the delivery of
newspapers may be attached to the post of a curbside mailbox provided
no part of the receptacle interferes with the delivery of mail,
obstructs the view of the flag, or presents a hazard to the carrier or
the carrier's vehicle. The receptacle must not extend beyond the front
of the box when the door is closed. No advertising may be displayed on
the outside of the receptacle, except the name of the publication. If
the mailbox design does not require a post, a separate mounting
arrangement must be made.
3.13 Workmanship--The mailbox must be properly assembled and
utilize the best commercial practice workmanship standards in the
fabrication of all components and assemblies. All movable parts must
fit and operate properly with no unintended catch or binding points.
The unit must be free from harmful projections or other hazardous
devices. The unit must not have any sharp edges, sharp corners, burrs
or other features (on any surfaces) that may be hazardous to carriers
or customers, or that may interfere with delivery operations as
described in 3.1.
3.14 Intellectual Property--Under no circumstances does the Postal
Service intend that manufacturers use third-party intellectual property
without an appropriate license agreement between the manufacturer and
the third party at issue. The manufacturer is solely responsible for
obtaining any necessary licenses and is solely responsible for any
liability incurred in connection with any intellectual property
infringement allegations concerning devices that the USPS reviews and
approves. The manufacturer agrees not to use any USPS marks, including
but not limited to APPROVED BY THE POSTMASTER GENERAL or USPS-APPROVED,
without prior USPS approval and a license from the USPS.
4. Testing Requirements
4.1 Testing Requirements--Mailboxes will be subjected to all
applicable testing described herein (specific requirements follow). A
mailbox that fails to pass any test will be rejected. Testing will be
conducted in sequence as listed herein and in Table III.
4.2 Capacity--Non-locked and locked designs must meet the
applicable minimum capacity requirements as tested by insertion and
removal of a test gauge or appropriate mail test items as specified in
4.2.1 and 4.2.2.
4.2.1 Capacity (Limited Capacity Test Gauge)--Traditional and
Contemporary designs, submitted for approval under 3.1.1.1 and 3.1.1.2,
must meet minimum capacity requirements tested by insertion and removal
of a standard test gauge which measures 18.50 inches long x 5.00 inches
wide x 6.00 inches high. The test gauge is inserted with its 6-inch
dimension aligned in the vertical axis (perpendicular to the mailbox
floor). The gauge must be capable of easy insertion and removal; and
while inserted, allow for all doors to be completely closed without
interference.
The capacity of Locked designs, submitted for approval under
3.1.2.1, which have slots, chutes or similar features, will be tested
and approved based upon whether standard USPS mail sizes (see Table I)
can be easily inserted through the mail slot or opening. Retrieval of
this mail from the locked compartment must be equally as easy.
Table I--Standard Mail
[Locked designs]
------------------------------------------------------------------------
Size (L x H x Thk)
Description (inches)
------------------------------------------------------------------------
Express & Priority Mail Envelopes................. 12\1/2\ x 9\1/2\ x
\1/2\
Priority Mail Box................................. 8\5/8\ x 5\3/8\ x
1\5/8\
------------------------------------------------------------------------
4.2.2 Capacity (Expanded Capacity Test Gauge)--Non-Locked and
Locked designs, submitted for approval to either 3.1.1.3 or 3.1.2.2,
must meet minimum capacity requirements tested by insertion and removal
of a standard test gauge which measures 16.00 inches long x 13.00
inches wide x 7.00 inches high. The test gauge is inserted with its 7-
inch dimension aligned in the vertical axis (perpendicular to the
mailbox floor). The gauge must be capable of easy insertion and
removal; and while inserted, allow for all doors to be completely
closed without interference. The capacity of Locked designs must also
meet this capacity test requirement; however, any dimension may be
aligned in the vertical axis. Retrieval of the test gauge from the
locked compartment must be equally as easy.
4.3 Operational Requirements--Carrier service doors, auxiliary
doors, door catches or mechanisms, carrier signal flags, and applicable
accessory devices must be capable of operating 7,500 normal operating
cycles (1 cycle = open/close) at room temperature, continuously and
correctly, without any failures such as breakage of parts. Testing may
be performed either manually or by means of an automated mechanically
driven test fixture which essentially mimics a manual operation. This
test applies to all mailbox designs.
4.4 Water-Tightness--A rain test in accordance with UL 771, section
47.7, must be performed to determine a mailbox's ability to protect
mail from water. The rain test must be operated for a period of 15
minutes for each side. At the conclusion of the test, the outside of
the unit is wiped dry and all doors are opened. The inside of the
compartment must contain no water other than that produced by high
moisture condensation. This test applies to all mailbox designs.
4.5 Salt Spray Resistance--A salt spray test must be conducted in
accordance with method A5 of ASTM G85, Standard Practice for Modified
Salt Spray (Fog) Testing. The salt test must be operated for 25
continuous cycles with each cycle consisting of 1-hour fog and 1-hour
dry-off. The mailbox must be tested in a finished condition, including
all protective coating, paint, and mounting hardware and must be
thoroughly washed when submitted to remove all oil, grease, and other
nonpermanent coatings. No part of the mailbox may show finish
corrosion, blistering or peeling, or other destructive reaction upon
conclusion of test. Corrosion is defined as any form of property change
such as rust, oxidation, color changes, perforation, accelerated
erosion, or disintegration. The build-up of salt deposits upon the
surface will not be cause for rejection. However, any corrosion, paint
blistering, or paint peeling is cause for rejection. This test is
primarily applicable to ferrous metal mailbox designs. The test is also
valid for mailbox designs made of plastic, wood, or other materials
that use any metal hardware.
4.6 Abrasion Resistance--The mailbox's coating or finish must be
[[Page 19919]]
tested for resistance to abrasion in accordance with method A of ASTM
D968. The rate of sand flow must be 2 liters of sand in 22 3 seconds. The mailbox will have failed the sand abrasion test if
it requires less than 15 liters of sand to penetrate its coating, or if
it requires less than 75 liters of sand to penetrate its plating. This
test applies to metal mailbox designs only.
4.7 Temperature Stress Test--The mailbox under test must be placed
in a cold chamber at -65[emsp14][deg]F for 24 hours. The chamber must
first be stabilized at the test temperature. After remaining in the -
65[deg] environment for the 24-hour period, the unit must be quickly
removed from the cold chamber into room ambient temperature and tested
for normal operation. The removal from the chamber and the testing for
normal operation must be accomplished in less than 3 minutes. The room
ambient temperature must be between 65[deg] and 75[deg] Fahrenheit.
Normal operation is defined as operation required and defined by this
document. The unit under test must undergo a similar temperature test,
as described above, at a temperature of 140[deg] Fahrenheit. This test
applies to all mailbox designs.
4.8 Structural Rigidity Requirements--Forces of specified magnitude
(see Table II) must be slowly applied at specific points on the mailbox
under test (see Figure 6). These forces must be held for a minimum of 1
minute and then released. After their release, the deformation caused
by the forces must be measured. If the deformation exceeds the limit
specified in Table II, the mailbox under test has failed to meet the
structural rigidity requirement. The doors must remain closed for test
positions 1 through 6. The forces at positions 1 and 2 must be applied
with the mailbox in its normal upright position, supported by a
horizontal board. The forces at positions 3, 4, and 5 must be applied
with the mailbox lying on its side (flag side down). The mailbox must
be supported, on the flag side, by a flat board that is relieved in the
immediate area of the flag mechanism. The force at position 6 (Non-
Locked mailbox flags only) must be applied with the mailbox lying on
its side (flag side up). This load may be applied as shown in Figure 5
or from the other direction. If visible cracks in the material, develop
as a result of the testing, the mailbox under test has failed to meet
the structural rigidity requirement. At the conclusion of the
Structural Rigidity testing, if the mailbox under test fails to operate
normally, as defined by this document, the mailbox under test has
failed to meet the structural rigidity requirement. This test applies
to all mailbox designs.
Table II--Permanent Deformation Limits
------------------------------------------------------------------------
Deformation Load
Position (inches) (pounds)
------------------------------------------------------------------------
1........................................... \1/8\ 200
2........................................... \1/8\ 200
3........................................... \1/8\ 50
4........................................... \1/8\ 50
5........................................... \1/8\ 100
6........................................... \1/2\ 2
------------------------------------------------------------------------
4.9 Impact Test--Refer to Figure 6 for load positions. Precondition
the mailbox for 4 hours at -20[deg] Fahrenheit. The following testing
must be performed within 3 minutes of removing the mailbox from the
temperature chamber. At both load positions 3 and 4, with the mailbox
lying on its side (flag side down) with all doors closed, apply an
impact load force generated by a 10-pound weight dropped from a height
of 3 feet above the mailbox surface onto a bolster plate having a
surface not larger than 2 inches by 6 inches. The mailbox must be
supported, on the underside, by a flat board that is relieved in the
immediate area of the flag mechanism. If any noticeable perforation,
occurrence of sharp edges, or cracking of the material (either inside
or outside the mailbox) develops as a result of the impact, or if the
door becomes inoperable or fails to close normally, the mailbox under
test has failed to meet the impact resistance requirement. This test
applies to all mailbox designs.
4.10 Door Catch or Mechanism Test--Door catches and mechanisms must
be tested to demonstrate that a force not greater than 5 pounds or less
than 1 pound is required to open and close them (see 3.3). A force
measurement device must be attached to the front door's knob or handle.
The load must be applied slowly in a direction perpendicular to the
plane of the door. The device must allow for the measured force limits
to be recorded accurately.
4.11 Carrier Signal Flag Test--The mailbox flag must be tested to
demonstrate that a force not exceeding 2 pounds is required to deploy,
extend, raise, or retract it. The load must be applied at the flag edge
furthest from the hinged end or at the leading edge, if the flag
retracts and extends. A force measurement device must be attached to
the flag so as to apply the load and allow for it to be recorded
accurately.
4.12 Security Test (Locked, Large Capacity Designs)--Locked design
mailboxes, submitted for 3.1.2.2 approval, must be tested as described
below for resistance to tampering and unauthorized entry through the
use of tools such as screwdrivers, flat plates, knives, pry bars, vise
grips, pliers, chisels, and punches for a period not to exceed 3
minutes for each feature tested. Pry tools used for testing must not
exceed 18 inches in length.
4.12.1 Customer Access Door--Gaps and seams around the perimeter of
the customer access door must be tested using pry tools listed in 4.12
for a period not to exceed 3 minutes to ensure that access to the
compartment cannot be gained within that period of time.
4.12.2 Carrier Access Door--A manual test must be conducted for a
period of 3 minutes to ensure that no customer mail items can be
accessed and removed through an opened carrier access door within that
period of time.
5. Quality Management System Provisions
5.1 Quality System--The approved source must ensure and be able to
substantiate that manufactured units conform to requirements and match
the approved design.
5.2 Inspection--The USPS reserves the right to inspect units for
conformance at any stage of manufacture. Inspection by the USPS does
not relieve the approved source of the responsibility to provide
conforming product. The USPS, may, at its discretion, revoke the
approval status of any product that does not meet the requirements of
this standard.
5.3 System--The approved source must use a documented quality
management system acceptable to the USPS. The USPS has the right to
evaluate the acceptability and effectiveness of the approved source's
quality management system prior to approval, and during tenure as an
approved source. At a minimum, the quality management system must
include controls and record keeping in the areas described in 5.3.1
through 5.3.8.
5.3.1 Document Control--Documents used in the manufacture of
product must be controlled. The control process for documents must
ensure the following:
Documents are identified, reviewed, and approved prior to
use.
Revision status is identified.
Documents of external origin are identified and
controlled.
5.3.2 Supplier Oversight--The approved source must use a documented
process that ensures the following:
[[Page 19920]]
Material requirements and specifications are clearly
described in procurement documents.
Inspection or other verification methods are established
and implemented for validation of purchased materials.
5.3.3 Inspection and Testing--The approved source must monitor and
verify that product characteristics match approved design. This
activity must be carried out at appropriate stages of manufacture to
ensure that only acceptable products are delivered.
5.3.4 Control of Nonconforming Product--The control method and
disposition process must be defined and ensure that any product or
material that does not conform to the approved design is identified and
controlled to prevent its unintended use or delivery.
5.3.5 Control of Inspection, Measuring, and Test Equipment--The
approved source must ensure that all equipment used to verify product
conformance is controlled, identified, and calibrated at prescribed
intervals traceable to nationally recognized standards in accordance
with documented procedures.
5.3.6 Corrective Action--The approved source must maintain a
documented complaint process. This process must ensure that all
complaints are reviewed and that appropriate action is taken to
determine cause and prevent reoccurrence. Action must be taken in a
timely manner and be based on the severity of the nonconformance. In
addition to outlining the approved source's approach to quality, the
documentation must specify the methodology used to accomplish the
interlinked processes and describe how they are controlled. The
approved source must submit its quality documentation to the Postal
Service for review along with the preliminary design review.
Note: It is recognized that each approved source functions
individually. Consequently, the quality system of each approved
source may differ in the specific methods of accomplishment. It is
not the intent of this standard to attempt to standardize these
systems, but to present the basic functional concepts that when
conscientiously implemented will provide assurance that the approved
source's product meets the requirements and fully matches the
approved design.
5.3.7 Documentation Retention--All of the approved source's
documentation pertaining to the approved product must be kept for a
minimum of 3 years after shipment of product.
5.3.8 Documentation Submittal--The approved source must submit a
copy of its quality system documentation relevant to the manufacture of
curbside mailboxes for review as requested during the approval process
and tenure as an approved source.
6. Application Requirements
6.1 Application Requirements--All correspondence and inquiries must
be directed to the address in 1.3.2. The application process consists
of the steps described in 6.1.1 through 6.1.3.4.
6.1.1 Preliminary Review--Manufacturers must first satisfy
requirements of a preliminary review prior to submitting samples of any
sample mailboxes or accessories. The preliminary review consists of a
review of the manufacturer's conceptual design drawings for each
mailbox for which the manufacturer is seeking approval. Computer-
generated drawings are preferred, but hand-drawn sketches are
acceptable provided they adequately depict the overall shape and
interior size of the proposed mailbox design. Drawings must also
include details about the design of applicable features such as the
carrier service door (including the mail drop design and mechanism, for
locking mailboxes), latch, handle, flag, floor, and mail induction
opening size. If drawings show that the proposed mailbox design appears
likely to comply with the requirements of this standard, manufacturers
will be notified in writing and may then continue with the application
requirements described in 6.1.2. Do NOT submit any sample units to the
USPS prior to complying with the requirements of 6.1.2. Notification
that a manufacturer's drawings satisfy the requirements of the
preliminary review does NOT constitute USPS approval of a design and
must NOT be relied upon as an assurance that a design will ultimately
be approved.
6.1.2 Independent Lab Testing--Upon receiving written notification
from the USPS that a submitted design satisfies requirements of the
preliminary review, manufacturers must, at their own expense, submit
one representative sample of their mailbox or accessory for which the
vendor seeks USPS approval to an independent laboratory for testing
along with a copy of the preliminary review letter from the USPS.
Manufacturers with more than one unique model must have each one tested
independently. Models that are generally of the same size, shape, and
material of previously approved designs but only have different
decorative features (i.e., color scheme and surface contours) are not
considered unique and do not require any testing. Manufacturers seeking
approval of models that are not unique must submit documentation for
each model in accordance with 6.1.3.2. This documentation must be
reviewed and the proposed model must either be approved or disapproved
(see Section 7). All tests must be performed by an approved independent
test lab, except for the security tests, which must be performed by the
Postal Service. See Appendix A for information on how to receive the
list of USPS-approved independent test labs.
6.1.3 Final Review--Within 180 days of receipt of USPS preliminary
review approval, manufacturers must submit one sample mailbox or
accessory to the USPS for security testing, final review, and approval.
The sample must be accompanied with a certificate of compliance and a
copy of the laboratory test results (see 6.1.3.3). Mailboxes submitted
to the USPS (see 1.3.2) for final evaluation must be identical in every
way to the mailboxes to be marketed, and must be marked as specified in
3.7. Manufacturers may be subject to a verification of their quality
system prior to approval. This may consist of a review of the
manufacturer's quality manual (see 6.1.3.4) and an onsite quality
system evaluation (see 5.2). If this final review submission does not
occur within the prescribed timeframe, the preliminary review approval
will be rescinded.
6.1.3.1 Installation Instructions--Manufacturers must furnish a
written copy of their installation instructions for review. These
instructions must contain all information as detailed in 3.11.
6.1.3.2 Documentation--Units submitted for approval must be
accompanied by two complete sets of manufacturing drawings consisting
of black on white prints (blueprints or sepia are unacceptable). The
drawings must be dated and signed by the manufacturer's
representatives. The drawings must completely document and represent
the design of the unit tested. If other versions of the approved
mailbox are to be offered, the drawings must include the unique or
differing design items of these versions. The drawings must include
sufficient details to allow the USPS to inspect all materials,
construction methods, processes, coatings, treatments, finishes
(including paint types), control specifications, parts, and assemblies
used in the construction of the unit. Additionally, the drawings must
fully describe any purchased materials, components, and hardware
including their respective finishes. The USPS may request individual
piece parts to verify drawings.
[[Page 19921]]
6.1.3.3 Certification of Compliance and Test Results--Manufacturers
must furnish a written certificate of compliance indicating that their
design fully complies with the requirements of this standard. In
addition, the manufacturer must submit the lab's original report which
clearly shows results of each test conducted (see Table III). The
manufacturer bears all responsibility for its units meeting these
requirements and the USPS reserves the right to retest any and all
units submitted, including those which are available to the general
public. Any changes to the design after approval and certification must
be submitted to the USPS for evaluation.
Table III--Test Requirements
----------------------------------------------------------------------------------------------------------------
Test Requirement Reference Applicable document
----------------------------------------------------------------------------------------------------------------
Capacity..................... Insertion of test gauge........ 4.2
Operational Requirements..... 7,500 cycles................... 4.3
Water-Tightness.............. No appreciable moisture........ 4.4 UL 771, Section 47.7.
Salt Spray Resistance........ 25 cycles...................... 4.5 ASTM G85.
Abrasion Resistance.......... 75 liters...................... 4.6 ASTM D968.
Temperature Stress Test...... Must function between -65 4.7
[deg]F and 140 [deg]F.
Structural Rigidity Refer to Table II for loads and 4.8
Requirements. points, maximum 1/8 inch
permanent deformation.
Impact Test.................. 10 lbs. dropped from 3 feet.... 4.9
Door Catch/Mechanism Test.... Max 5 lbs./Min 1 lb. to open/ 4.10
close door.
Carrier Signal Flag Test..... Max 2 lbs. required to use flag 4.11
----------------------------------------------------------------------------------------------------------------
6.1.3.4 Quality Policy Manual--The manufacturer must submit its
quality policy manual to the address listed in 1.3.2.
7. Approval or Disapproval
7.1 Disapproval--Written notification, including reasons for
disapproval, will be sent to the manufacturer within 30 days of
completion of the final review of all submitted units. All
correspondence and inquiries must be directed to the address listed in
1.3.2.
7.1.1 Disapproved Mailboxes--Mailboxes disapproved will be disposed
of in 30 calendar days from the date of the written notification of
disapproval or returned to the manufacturer, if requested, provided the
manufacturer pays shipping costs.
7.2 Approval--One set of manufacturing drawings with written
notification of approval will be returned to the manufacturer. The
drawings will be stamped and identified as representing each unit.
7.2.1 Approved Mailboxes--Mailboxes that are approved will be
retained by the USPS.
7.2.2. Rescission--The manufacturer's production units must be
constructed in accordance with the USPS-certified drawings and the
provisions of this specification and be of the same materials,
construction, coating, workmanship, finish, etc., as the approved
units. The USPS reserves the right at any time to examine and retest
units obtained either in the general marketplace or from the
manufacturer. If the USPS determines that a mailbox model is not in
compliance with this standard or is out of conformance with approved
drawings, the USPS may, at its discretion, rescind approval of the
mailbox as described in 7.2.2.1 through 7.2.2.5.
7.2.2.1 Written Notification--The USPS will provide written
notification to the manufacturer that a mailbox is not in compliance
with this standard or is out of conformance with approved drawings.
This notification will include the specific reasons that the unit is
noncompliant or out of conformance and will be sent via Registered
Mail\TM\.
7.2.2.1.1 Health and Safety--If the USPS determines that the
noncompliance or nonconformity constitutes a danger to the health or
safety of customers or letter carriers, the USPS may, at its
discretion, immediately rescind approval of the unit. In addition, the
USPS may, at its discretion, order that production of the mailbox cease
immediately, that any existing inventory not be sold for receipt of
U.S. Mail, and that USPS Approved corrective design changes be applied
to sold and unsold units.
7.2.2.2 Manufacturer's Response--In all cases of noncompliance or
nonconformity other than those determined to constitute a danger to the
health or safety of customers or letter carriers, the manufacturer must
confer with the USPS and must submit one sample of a corrected mailbox
to the USPS for approval no later than 45 calendar days after receipt
of the notification described in 7.2.2.1. Failure to confer or submit a
corrected mailbox within the prescribed period will constitute grounds
for immediate rescission.
7.2.2.3 Second Written Notification--The USPS will respond to the
manufacturer in writing, via Registered Mail, no later than 30 calendar
days after receipt of the corrected mailbox with a determination of
whether the manufacturer's submission is accepted or rejected and with
specific reasons for the determination.
7.2.2.4 Manufacturer's Second Response--If the USPS rejects the
corrected mailbox, the manufacturer may submit a second sample of the
corrected mailbox to the USPS for approval no later than 45 calendar
days after receipt of the notification described in 7.2.2.3. Failure to
confer or submit a corrected mailbox within the prescribed period will
constitute grounds for immediate rescission.
7.2.2.5 Final USPS Rescission Notification--The USPS will provide a
final response to the manufacturer in writing no later than 30 calendar
days after receipt of the second sample corrected mailbox with a
determination of whether the manufacturer's submission is accepted or
rejected and with specific reasons for the determination. If the second
submission is rejected, the USPS may, at its discretion, rescind
approval of the mailbox. In addition, the USPS may, at its discretion,
order that production of the mailbox cease immediately, and that any
existing inventory not be sold or used for receipt of U.S. Mail. If the
USPS rescinds approval, the manufacturer is not prohibited from
applying for a new approval pursuant to the provisions of 6.
7.2.3 Revisions, Product or Drawings--Changes that affect the form,
fit, or function (e.g., dimensions, material, and finish) of approved
products or drawings must not be made without written USPS approval.
Any proposed changes must be submitted with the affected documentation
reflecting the changes (including a
[[Page 19922]]
notation in the revision area), and a written explanation of the
changes. One unit, incorporating the changes, may be required to be
resubmitted for testing and evaluation for approval.
7.2.3.1 Corporate or Organizational Changes--If any substantive
part of the approved manufacturer's structure changes from what existed
when the manufacturer became approved, the manufacturer must promptly
notify the USPS and will be subject to a reevaluation of its approved
products and quality system. Examples of substantive structural changes
include the following: Change in ownership, executive or quality
management; major change in quality policy or procedures; relocation of
manufacturing facilities; and major equipment or manufacturing process
change (e.g., outsourcing vs. in-plant fabrication). Notification of
such changes must be sent to the address given in 1.3.
7.2.4 Product Brochure--Within 60 days upon sale to the public,
manufacturers must submit one copy of their product brochures
representing approved mailbox designs to the address listed in 1.3.2
and to:
USPS, Delivery Program Support, 475 L'Enfant Plaza SW., Rm. 7142,
Washington, DC 20260-7142
8. Notes
8.1 Mailboxes intended to be used in delivery to customers' doors
are not currently ``approved'' by the United States Postal Service as
referenced in this standard. However, it is recommended that these
boxes conform to the intentions of this specification, particularly the
safety of the carrier and customer and the protection of the mail. The
local postmaster must be contacted prior to the installation and use of
any door mailbox.
8.2 The United States Postal Service does not approve mailbox posts
or regulate mounting of mailboxes other than the requirements specified
in 3.10 and 3.11. Please note that mailbox posts are often subject to
local restrictions, state laws, and federal highway regulations.
Further information may be obtained from:
American Association of State Highway and Transportation Officials, 444
N. Capitol St. NW., Suite 249, Washington, DC 20001-1512,http://www.transportation.org.
Federal Highway Administration, Office of Safety, 1200 New Jersey
Avenue SE., Washington, DC 20590-0001, safety.fhwa.dat.gov.
BILLING CODE 7710-12-P
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Appendix A
USPS-Approved Independent Test Laboratories
To obtain the latest list of USPS-approved test labs, contact:
USPS ENGINEERING SYSTEMS, DELIVERY AND RETAIL TECHNOLOGY, 8403 LEE
HIGHWAY, MERRIFIELD, VA 22082-8101.
Additional test laboratories may be added provided they satisfy
USPS certification criteria. Interested laboratories should contact:
USPS ENGINEERING, TEST EVALUATION AND QUALITY, 8403 LEE HIGHWAY,
MERRIFIELD, VA 22082-8101.
[FR Doc. 2015-08342 Filed 4-13-15; 8:45 am]
BILLING CODE 7710-12-C