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4C CUSTOM HORIZONTAL MAILBOXES
Front or Rear Loading

custom horizontal mailboxes Made of heavy duty aluminum and stainless steel hardware, The 3700 series
4C custom horizontal mailboxes and parcel lockers are U.S.P.S. approved
and are available in configurations that are one door wide (single column) and
two (2) doors wide (double column). Units include factory installed
3/4'' W x 1/4'' D trim and can be configured with a combination of four (4)
mailbox door sizes and two (2) parcel locker door sizes to meet your custom
requirements (please submit required layout). A compartment equivalent to
two (2) 3-1/4'' high standard MB1 doors must be reserved in each custom
front loading mailbox unit for outgoing mail collection and the access door.
4C custom horizontal mailboxes feature a durable powder coated finish
available in four (4) contemporary colors. Custom colors are available as
an option upon request. 4C custom horizontal mailboxes are designed for
indoor or outdoor use and are ideal for apartments, residential communities,
commercial buildings and many other applications.
PARCEL LOCKERS can be fully integrated into the
3700 series 4C custom horizontal mailbox units. A
minimum of one parcel locker is required for every ten
(10) tenant compartments. Parcel lockers are not required
for installation sites with less than ten (10) tenant com-
partments.
Custom front loading unit with
aluminum finish displayed

ORDERING A 4C CUSTOM HORIZONTAL UNIT

Following simple guidelines, custom units can be
configured with a combination of varying sizes of
mailbox doors and parcel locker doors.
1.
Determine the number of openings required
using MB1, MB2, MB3 and MB4 mailbox
doors and PL5 and PL6 parcel locker doors.
Custom units can accommodate mailbox doors from
1 high (3-1/4") to 4 high (13-3/4") and parcel locker
doors either 5 high (17-1/4") or 6 high (20-3/4").
Custom units are available for both front and rear
loading applications.
Doors Sizes
MB1 - 3-1/4" H x 13-1/4" W
MB2 - 6-3/4" H x 13-1/4" W
MB3 - 10-1/4" H x 13-1/4" W
MB4 - 13-3/4" H x 13-1/4" W
Custom units are available in equivalent standard
mailbox door heights of 15, 13, 11, 9, 7, 5 and 3 -
see Note 2 below. The carrier door / outgoing mail
compartment (OM2) must be situated in the designated
position. See the diagrams below for illustrations for the
designated position of the carrier door / outgoing mail
compartment (OM2) in their respective heights.
PL5 - 17-1/4" H x 13-1/4" W
PL6 - 20-3/4" H x 13-1/4" W
2.
Configure your requirements into a single or double
column unit and into equivalent standard mailbox
door heights of three (3) to fifteen (15). Specify
front or rear loading. The outgoing mail
compartment / access door (OM2) must be
situated in the designated position. See the
diagrams of our standard units on pages 12-15
for illustrations of the designated position of the
outgoing mail compartment / access door (OM2)
in their respective heights.
Single or double column units can be configured from
a minimum of three (3) standard one high mailbox
doors to a maximum of fifteen (15) standard one high
mailbox doors including both mailboxes and parcel
lockers. Mail- boxes are only permitted in the top
eleven (11) one high mailbox positions but parcel
lockers may be positioned anywhere. U.S.P.S.
standard 4C requires a minimum of one parcel
locker for every ten (10) tenant compartments.
Parcel lockers are not required for installation
sites with less than ten (10) tenant compartments.
3.
Contact us for rough opening dimensions and
layout specifications.
SAMPLE DOUBLE COLUMN FRONT LOADING UNIT
OVERALL UNIT SIZES
Overall unit sizes are summarized below. Match the
configuration you require to the standard unit height.
Note 1: MB1 is the smallest mailbox door available.
MB4 is the largest mailbox door available.
PL5 is the smallest parcel locker door available.
PL6 is the largest parcel locker door available.
Note 2: We can also customize the maximum height
units (56-3/4" H). Please contact our
sales department for layout, options and
pricing.
If Front Loading
Units include one or two (2) master door(s) that swing(s) on continuous integral hinges. The two (2) high outgoing
mail compartment includes the U.S.P.S. Master lock access door and cannot be used for mail distribution.
The rear of the unit incorporates a solid rear cover.
Note: 3700 series 4C standard horizontal mailboxes and parcel lockers have been U.S.P. S. approved and meet the specifications
of USPS-STD-4C. These units are required for new construction and major renovations.

If Rear Loading
The front of the two (2) high outgoing mail compartment is
comprised of two (2) fixed panels (no access door). The
rear of the unit incorporates one or two (2) access door(s)
with heavy duty latches and continuous hinges. Units
available without rear access doors upon request.
4C HORIZONTAL MAILBOX SPECIFICATIONS & OPTIONS
FINISHES
The durable and corrosion resistant units feature a
powder coated finish available in aluminum, bronze, gold
or sandstone. Custom finishes (#3766 - add 10% to unit
price) are available as an option upon request.
DOOR IDENTIFICATION
Each 4C standard horizontal mailbox door has an easy
to read 1" H number. The outgoing mail compartment
is labeled "Outgoing Mail" and the parcel locker(s)
are labeled with a "P" and a corresponding number.
Custom identification systems are available as an
option upon request.
CUSTOM ENGRAVED PLACARDS (#3767)
1-3/4" W x 1-1/2" H custom engraved
self-adhesive placards are available as
an option upon request.
custom engraved placards
CUSTOM ENGRAVED DOORS
• Custom engraved door -
   regular - #3768
engraved doors
• Custom engraved door -
   black filled - #3774
custom engraved doors
OUTGOING MAIL COMPARTMENTS LOCKS
One additional compartment in each unit is labeled
"Outgoing Mail" and includes a weather protection
flap and a 10-3/4"W x 3/4"H mail slot.
Each 4C mailbox door
includes a heavy duty five
(5) pin cylinder cam lock
with a dust/rain shield and
three (3) keys. (2,000
different key changes).
locks
OPTIONS (for installations not serviced by the U.S.P.S.
• Mail slots - (#3769) Standard slot size:
   10"W x 3/4"H
• Additional keys per lock
   when ordering (#3798)
#3790
Custom slot sizes are available upon request.
• Key blanks - box of (50) (#3799)
• Plexiglass window 1-1/8"W x 7/8"H (#3771)
• Custom lock installation - cylinders provided by
   owner (for installations not serviced by the U.S.P.S.)
   (100) door minimum (#3793 - $5.00 additional per door)
COMBINATION LOCK #3786
• Outgoing mail slot plug kit (#3770)
Three (3) digit single dial combination
lock with spring latch and automatic
throw-off (for installations not serviced
by the U.S.P.S). Combination numbers
can be changed by owner.
MASTER COMMERCIAL LOCK
Factory installed if for private access -
for front loading mailboxes and parcel
lockers - with (2) keys
TENANT PARCEL LOCKER LOCK
For parcel locker door -
with (3) keys
SUBMIT REQUIRED LAYOUT AND
OPTIONS FOR A PRICE QUOTATION

Order Online, by Phone, or by E-Mail

~ Add items to your online shopping cart ~
Click the Model No. of the item you wish to purchase.

PRICES
Model No.
Description
Unit Size
Weight
Prices
Mailboxes
3700MB1¹²³
MB1 Door and 17" D Compartment
3-1/4"H x 13-1/4" W
5 lbs
$70
3700MB2¹²³
MB2 Door and 17" D Compartment
6-3/4"H x 13-1/4" W
10 lbs
$100
3700MB3¹²³
MB3 Door and 17" D Compartment
10-1/4"H x 13-1/4" W
15 lbs
$125
3700MB4¹²³
MB4 Door and 17" D Compartment
13-3/4"H x 13-1/4" W
20 lbs
$155
3700M2¹²³
OM2 Carrier Door/Outgoing Mail Compartment*
6-3/4"H x 13-1/4" W
10 lbs
$100
Parcel Lockers
3700PL5¹²³
PL5 Parcel Locker and 17" D Compartment
17-1/4"H x 13-1/4" W
25 lbs
$200
3700PL6¹²³
PL6 Parcel Locker and 17" D Compartment
20-3/4"H x 13-1/4" W
30 lbs
$225
Spare Parts / Options
Door - MB1 replacement door and lock with (3) keys
3-1/4"H x 13-1/4" W
1 lb.
$50
Door - MB2 replacement door and lock with (3) keys
6-3/4"H x 13-1/4" W
2 lbs.
$60
Door - MB3 replacement door and lock with (3) keys
10-1/4"H x 13-1/4" W
2 lbs.
$70
Door - PL3 replacement door and lock with (2) keys
10-1/4"H x 13-1/4" W
2 lbs.
$90
Door - MB4 replacement door and lock with (3) keys
13-3/4"H x 13-1/4" W
3 lbs.
$80
Door - PL4 replacement door and lock with (2) keys
13-3/4"H x 13-1/4" W
3 lbs.
$95
Door - PL4.5 replacement door and lock with (2) keys
15-1/2"H x 13-1/4" W
4 lbs.
$100
Replacement PL5 door and tenant lock
~
~
$105
Replacement PL6 door and tenant lock
~
~
$110
3766
Custom finishes (Add 15% to unit price)
~
~
3767
Custom engraved placard - for 3700 series mailbox doors and parcel lockers
~
~
$3
3768
Custom engraved door - regular - for 3700 series mailbox doors and parcel lockers
~
~
$5
Mails slots - Standard slot size
10"W x 3/4"H
~
$5
Outgoing mail splot plug kit
~
~
$35
Plexiglass window
1-1/8"W x 7/8"H
~
$3
3774
Custom engraved door - black filled - for 3700 series mailbox doors and parcel lockers
~
~
$5
Master commercial lock-for front loading mailbox units and parcel lockers-if for private access
~
~
$30
Tenant Parcel Locker lock - with (3) keys
~
~
$40
Combination lock
~
~
$15
Lock - standard replacement for 3700 series mailbox door - with (3) keys
~
~
$15
Additional keys per lock when ordering
~
~
$3
Key blanks - for standard 3700 series locks - box of (50)
~
~
$35
When Ordering: * The Outgoing Mail Compartment / Access Door
(OM2) must be situated in the designated position -
see diagram of our standard units above.
Note: The price of 4C custom horizontal mailboxes is
the total of each mailbox, parcel locker and outgoing
mail compartment within a unit. Allow approximately
2-3 weeks for 4C custom horizontal mailboxes
delivery. For quicker delivery order from our Standard
Horizontal Mailboxes.
² Specify - • Front Loading (FL)
                  • Rear Loading (RL)
³ Specify - • For U.S.P.S. mail delivery installation
                  • For private mail distribution installation
(order #3775 master commercial lock for private
access front loading units and parcel lockers)
Custom Horizontal Mailboxes, Parcel Lockers, Aluminum Mailboxes, Mailbox Units, Indoor/Outdoor Application,
USPS Approved, Front or Rear Loading, Single/Double Column Units, and Heavy Duty Cam Locks from your
source for material handling equipment.

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