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4C CUSTOM HORIZONTAL MAILBOXES
Front or Rear Loading
custom horizontal mailboxes Made of heavy gauge aluminum and stainless steel hardware, the 3700
series U.S.P.S. approved 4C custom horizontal mailboxes and fully
integrated parcel lockers are available as front loading units or rear
loading units and are designed for indoor and outdoor applications. If the
unit is front loading, units include one or two (2) master door(s) that
swing(s) on a continuous integral hinge. The 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 closed back.
If the unit is rear loading, the front of the outgoing mail compartment is
comprised of two (2) fixed panels and there is no U.S.P.S. Master lock
access door. The rear of the unit incorporates one or two (2) heavy duty
access door(s) with latches and continuous hinges.

Available in single and double column units, 4C custom horizontal mail-
boxes can integrate different combinations of mailbox and parcel locker
door sizes and include a standard powder coated aluminum, bronze, gold
or sandstone finish. Custom colors are available as an option upon
request. Units can receive mail from either the U.S. Postal Service or
from a private individual. Each mailbox door includes a heavy duty five
(5) pin cylinder cam lock with a dust/rain shield and three (3) keys and
a 1'' H easy to read number. The 16-3/8'' deep compartments are made
of sheet aluminum. Parcel lockers can either be fully integrated or stand-
alone.

Custom front loading unit with
aluminum finish displayed
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.

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 requirement into a single or double
column unit and into unit door heights of 15, 13,
11, 9, 7, 5, or 3. Specify front or rear loading.
The carrier door / outgoing mail compartment
(OM2) must be situated in the designated
position - see the diagrams below for illustrations.
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.
Color Chart
SAMPLE DOUBLE COLUMN FRONT LOADING UNIT
custom mailboxes
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
estimating department for layout, options and
pricing.
If Front Loading
If Rear 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.
The front of the two (2) high outgoing mail compart-
ment is comprised of two (2) fixed panels and there
is no U.S.P.S. Master lock access door. The rear of
the unit incorporates one or two (2) heavy duty access
door(s) with latches and continuous hinges.
front load mailboxes rear load mailboxes
OPTIONS
FINISHES DOOR IDENTIFICATION
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.
Each 4C sandard 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
1-3/4" W x 1-1/2" H custom
engraved self-adhesive
placards are available as an
option upon request.
custom engraved placards
LOCKS
Each 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). #3790
• Key blanks - box of (50)
#3799
locks
CUSTOM ENGRAVED DOORS
• Custom engraved door -
   regular - #3768
engraved doors
• Custom engraved door -
   black filled - #3774
custom engraved doors
SUBMIT REQUIRED LAYOUT AND
OPTIONS FOR A PRICE QUOTATION
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 $75
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 $150
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 $250
3700PL6¹²³ PL6 Parcel Locker and 17" D Compartment 20-3/4"H x 13-1/4" W 30 lbs $300
Spare Parts / Options
3751¹ Door - MB1 replacement door and lock with (3) keys 3-1/4"H x 13-1/4" W ~ $40
3752¹ Door - MB2 replacement door and lock with (3) keys 6-3/4"H x 13-1/4" W ~ $50
3753¹ Door - MB3 replacement door and lock with (3) keys 10-1/4"H x 13-1/4" W ~ $60
3754¹ Door - MB4 replacement door and lock with (3) keys 13-3/4"H x 13-1/4" W ~ $70
3775 Master commercial lock-for front loading mailbox units
and parcel lockers-if for private access
~ ~ $25
3776 Tenant Parcel Locker lock - with (3) keys ~ ~ $35
3790 Lock - standard replacement for 3700 series
mailbox door - with (3) keys
~ ~ $15
3799 Key blanks - for standard 3700 series locks -
box of (50)
~ ~ $30
When Ordering:
¹ Specify - Color (from color chart)
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)
* The Carrier Door / Outgoing Mail Compartment
(OM2) must be situated in the designated position -
see diagram 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.
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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