SALSBURY INDUSTRIES
1010 East 62
nd
Street, Los Angeles, CA 90001-1598
Ph: 1-800-624-
5269 Int’l Ph: 323-846-6700
Fx: 1-800-624-
5299 Int’l Fx:
323-846-6800
www.mailboxes.com engineering@mailboxes.com
Installation instructions are provided as general guidelines. It is advised that a professional installer be consulted. Salsbury Industries assumes no product assembly or installation liability
.
Copyright © 2014 Salsbury Industries. All rights reserved. (P/N 370137, Rev. 18, 2/27/14) Page 1 of 4
U.S.P.S. APPROVED
U.S.P.S. APPROVED
With its high-security design and quality construction, Salsbury’s 3700 series USPS approved 4C horizontal mailboxes will provide years of
maintenance free service.
These units meet all the requirements of USPS-STD-4C, the new high-security standard developed by the United
States Postal Service.
Typical Installation
Preparatory Steps
1
. Have mailboxes and instructions on hand before starting wall
construction.
2
. Unpack and review contents of shipping cartons.
3
. Gather tenant and parcel locker keys and store in a secure place.
4.
Read installation instructions document thoroughly.
5
. Determine rough opening size(s).
6
. Determine rough opening location above finished floor.
7
. Determine framing configuration and location.
8
. Procure materials for wall construction.
Rough Opening Dimensions
Each unit requires a separate opening in the drywall. Each pair of
units will have a 2x4 stud separating them. The trim frames cannot
be butted together. There will be a space between edges of trim
frames of approximately 3/4” when 2x4 studs with drywall separate
the mailboxes.
Calculation Of Space Required for Multiple Units
For overall width of mailbox installation, add all of the stud spacing
and subtract ¾”. For overall height of units, see the dimension chart
below.
Dimensions – FRONT LOADING
WIDTHS
1 COLUMN
2 COLUMN
Overall
16-3/8”
31-1/8”
Rough Opening
15-5/8”
30-3/8”
Stud Spacing
17-1/8”
31-7/8”
HEIGHTS
OVERALL
ROUGH OPENING
Maximum Height
56-3/4”
56”
15 Doors High
55”
54-1/4”
14 Doors High
51-1/2”
50-3/4”
13 Doors High
48”
47-1/4”
12 Doors High
44-1/2”
43-3/4”
11 Doors High
41”
40-1/4”
10 Doors High
37-1/2”
36-3/4”
9 Doors High
34”
33-1/4”
8 Doors High
30-1/2”
29-3/4”
7 Doors High
27”
26-1/4”
6 Doors High
23-1/2”
22-3/4”
5 Doors High
20”
19-1/4”
4 Doors High
16-1/2”
15-3/4”
3 Doors High
13”
12-1/4”
4C Horizontal Mailboxes
– 3700 Series
FRONT LOADING Installation Instructions
IMPORTANT !
After installing the unit, contact your local postmaster
– the USPS will
provide and install its own master lock on your mailbox unit. Hardware
and instructions for installing the master lock is included inside the unit.
Please provide the hardware and instructions to the USPS
representative when they arrive to install the lock.
