Salsbury Industries 3700 Series Installation Instructions

4C Horizontal Mailboxes – 3700 Series
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.
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.
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.
FRONT LOADING Installation Instructions
IMPORTANT !
SALSBURY INDUSTRIES
nd
1010 East 62
Ph: 1-800-624-5269
Fx: 1-800-624-5299
www.mailboxes.com
Copyright © 2014 Salsbury Industries. All rights reserved. (P/N 370137, Rev. 18, 2/27/14) Page 1 of 4

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
Overall
Rough Opening
Stud Spacing
HEIGHTS
Maximum Height
15 Doors High
14 Doors High
13 Doors High
12 Doors High
11 Doors High
10 Doors High
9 Doors High
8 Doors High
7 Doors High
6 Doors High
5 Doors High
4 Doors High
3 Doors High
Street, Los Angeles, CA 90001-1598
Int'l Ph: 323-846-6700
Int'l Fx: 323-846-6800
engineering@mailboxes.com
U.S.P.S. APPROVED
U.S.P.S. APPROVED
1 COLUMN 2 COLUMN
16-3/8" 31-1/8"
15-5/8" 30-3/8"
17-1/8" 31-7/8"
OVERALL ROUGH OPENING
56-3/4" 56"
55" 54-1/4"
51-1/2" 50-3/4"
48" 47-1/4"
44-1/2" 43-3/4"
41" 40-1/4"
37-1/2" 36-3/4"
34" 33-1/4"
30-1/2" 29-3/4"
27" 26-1/4"
23-1/2" 22-3/4"
20" 19-1/4"
16-1/2" 15-3/4"
13" 12-1/4"