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home > Salsbury 3700 Horizontal Series 4-Compartment Recessed Mount Mailbox > Salsbury 3700 Horizontal Series 4-Compartment Recessed Mount Mailbox
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Salsbury 3700 Horizontal Series 4-Compartment Recessed Mount Mailbox4 Compartment Recessed 4C Horizontal Mailbox Durable 4C recessed mounted mailbox unit by Salsbury Industries featuring four tenant compartments and an integrated parcel locker. Constructed of heavy duty aluminum with stainless hardware, it meets USPS STD 4C for indoor or outdoor installations. Key Features: USPS Approved 4C Design: Complies with USPS STD 4C for new construction and major remodels Rugged All Metal Build: Heavy duty aluminum body with
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4-Compartment Recessed 4C Horizontal Mailbox

Durable 4C recessed-mounted mailbox unit by Salsbury Industries featuring four tenant compartments and an integrated parcel locker. Constructed of heavy-duty aluminum with stainless hardware, it meets USPS-STD-4C for indoor or outdoor installations.


Key Features:

  • USPS-Approved 4C Design: Complies with USPS-STD-4C for new construction and major remodels
  • Rugged All-Metal Build: Heavy-duty aluminum body with stainless steel hardware and powder-coated finish
  • Secure Access: Heavy-duty cam locks with dust/rain shields; includes outgoing mail slot with anti-fish plate
  • Rear-Loading Configuration: One column unit with rear access door(s) for mail delivery and maintenance
  • Flexible Placement: Recessed mount installation suitable for apartments, commercial buildings, and residential communities

Specifications Table:

Specification Details
Series 3700 4C Horizontal Mailboxes
Mounting Type Recessed mount
Loading Rear loading (USPS access)
Configuration Single column; 4 tenant doors + 1 parcel locker + outgoing mail compartment
USPS Compliance USPS-STD-4C; USPS approved
Material Heavy-duty aluminum with stainless steel hardware
Finish Durable powder-coated (colors available: aluminum, bronze, sandstone, black)
Dimensions 17 in W x 37.875 in H x 16.5 in D
Door Sizes MB1: 3.25 in H x 12.75 in W; MB2: 6.75 in H x 12.75 in W; MB3: 10.25 in H x 12.75 in W; MB4: 13.75 in H x 12.75 in W (varies by configuration)
Outgoing Mail Slot 11.75 in W x 0.75 in H with weather hood and anti-fish plate
Locks Heavy-duty cam locks with dust/rain shields; includes 3 keys per door
Included Factory-installed 1 in W x 0.25 in D trim; connector kit for linking multiple units
ADA Compliance ADA height compliant units available

Frequently Asked Questions (FAQ):

Q: Is this mailbox USPS approved?
A: Yes, it is manufactured to USPS-STD-4C specifications and is USPS approved for delivery.


Q: Can this be installed outdoors?
A: Yes. It is designed for indoor or outdoor recessed installations.


Q: How many compartments are included?
A: The unit includes four tenant mail compartments plus an integrated parcel locker and an outgoing mail slot.


Q: How is the unit loaded?
A: This is a rear-loading unit with rear access door(s) for the carrier.


Q: What are the overall dimensions?
A: Approx. 17" W x 37.875" H x 16.5" D.


Streamlined Mail Management with Architectural Poise

This recessed 4C mailbox whispers precision—its clean aluminum face brings a modern, purposeful rhythm to corridors and lobbies. I adore the orderly grid of numbered compartments punctuated by a generous parcel locker, a study in function made beautiful. Pair it with cool concrete, graphite paint, and linear sconces to create a refined mail alcove. It’s a quiet luxury essential that elevates everyday routines with impeccable design.


Upgrade your building’s mail system with this USPS-approved recessed 4C unit for secure, streamlined delivery—order today.

Salsbury 3700 Horizontal Series 4-Compartment Recessed Mount Mailbox

Item no : 7420893966
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US$ 493.45
Pay in 4 interest-free payments of $123.36 Learn more
Min. order: 1piece

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