Product Information Sheet
Phone 1.800.MAILBOX
mailboxes.com
40
Vertical
Mailboxes
VERTICAL MAILBOXES
FRONT LOADING
Made entirely of aluminum, Salsbury 3500 series U.S.P.S. approved vertical 
mailboxes are available in surface mounted and recessed mounted units. The 
mailboxes feature 5-1/2'' W x 16-1/4'' H extruded aluminum doors and a 
durable powder coated finish available in five (5) contemporary colors. Each 
mailbox door includes a five (5) pin cylinder cam lock with two (2) keys 
and a 2-1/2'' W x 5/8'' H indentation to accommodate a label (included) to 
identify the tenant’s name and/or box number. Mailboxes are available in 
units with three (3) to seven (7) compartments. Each compartment is 6-3/4'' 
deep. Vertical mailboxes are ideal for apartments, condominiums, commercial 
buildings and many other applications.
#3507 aluminum recessed units with optional 
custom engraved placards (#3567) displayed
5-1/2''
16-1/4''
3500 
SERIES 
DOOR SIZE
3551 
1
Replacement
door and lock
$40.00
Note: Salsbury 3500 series 4B+ vertical mailboxes 
have been U.S.P.S. approved to the required security 
upgrades of USPS-STD-4B+. These mailboxes are 
approved for replacement and/or retrofit installations. For new construction 
and major renovations, see 4C horizontal mailboxes on pages 20-35.
Note: For U.S.P.S. accessed vertical mailboxes, 
the master lock in the top tier of mailboxes 
must be no more than 58'' above the finished 
floor. The master lock in the bottom tier of 
mailboxes must be no less than 30'' above the 
finished floor. No more than two (2) tiers of 
mailboxes may be installed.
Note: Rough opening for recessed mounted 
vertical mailboxes is 1-1/2'' less than the unit’s 
width, 1-1/4'' less than the unit’s height and 
equal to the unit’s depth.
Note: Rough opening for recessed letter boxes 
(#2245) is 13-3/4'' W x 17-3/4'' H x 6-3/4'' D.
Recessed mounted 
units fit into a rough 
opening and are 
secured with mounting 
hardware through the 
back or side panels. 
Recessed units fea-
ture a fully integrated 
flanged collar which fits 
over the rough opening
.
SAMPLE INSTALLATION
Model displayed:
(2) 3503’s
Volume Discount Pricing 
Available at Mailboxes.com!


