Salsbury 3700 Horizontal Series Recessed Mount Mailbox, 9 Compartments with 2 Parcel Lockers3700 Series Recessed 4C Mailbox, 9 Doors + 2 Parcel Lockers USPS approved recessed 4C horizontal mailbox constructed from heavy duty aluminum with stainless steel hardware. This double column, 10 door high unit provides nine tenant compartments, two integrated parcel lockers, and an outgoing mail slotideal for apartments, commercial buildings, and residential communities. Key Features: USPS STD 4C Compliant: Front loading design with carrier access

3700 Series Recessed 4C Mailbox, 9 Doors + 2 Parcel Lockers

USPS-approved recessed 4C horizontal mailbox constructed from heavy-duty aluminum with stainless steel hardware. This double-column, 10-door-high unit provides nine tenant compartments, two integrated parcel lockers, and an outgoing mail slot—ideal for apartments, commercial buildings, and residential communities.

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Key Features:

• USPS-STD-4C Compliant: Front-loading design with carrier access door for USPS master lock
• Durable Construction: Heavy-duty aluminum with powder-coated finish and stainless steel hardware
• Secure Access: Heavy-duty cam locks with dust/rain shields; individually numbered doors
• Integrated Parcel Lockers: Two lockers meet 1:5 USPS parcel ratio; outgoing mail slot with anti-fish plate
• Modular Configuration: Double-column recessed unit with factory-installed trim and connector kit

Please check the Product Data Sheet Here

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Specifications Table:

Specification	Details
Series	Salsbury 3700 Series 4C Horizontal Mailboxes
Mounting Style	Recessed, front loading
Configuration	Double column, 10-door-high unit
Tenant Compartments	9 MB1-equivalent doors
Parcel Lockers	2 integrated parcel lockers (PL4.5 and PL5 referenced in model family)
Outgoing Mail	Outgoing mail slot with weather protection hood; anti-fish plate
USPS Access	Carrier access door with USPS-provided master arrow lock
Construction	Heavy-duty aluminum with stainless steel hardware
Finish	Durable powder-coated (colors available: aluminum, bronze, gold, sandstone; black shown)
Door Locks	Heavy-duty cam locks; dust/rain shield; 3 keys per door
Dimensions	31.125" W x 37.875" H x 16.5" D
Weight	130 lbs
Compliance	USPS-STD-4C; ADA height compliant units available
Included Trim	Factory installed 3/4" W x 1/4" D trim and solid rear cover
Connector Kit	4C horizontal mailbox connector kit included

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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 front-loading access.

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Q: What are the overall dimensions?
A: 31.125 in W x 37.875 in H x 16.5 in D.

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Q: How many tenant compartments and parcel lockers are included?
A: Nine tenant mail compartments and two fully integrated parcel lockers, plus an outgoing mail slot.

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Q: Can it be used outdoors?
A: Yes. It’s designed for indoor or outdoor use with a durable powder-coated finish.

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Q: What locking mechanism is used?
A: Heavy-duty cam locks are included on doors; USPS installs the master arrow lock for carrier access.

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Streamlined Mailroom Elegance

This recessed mailbox system brings a refined, architectural presence to shared spaces. Its crisp, powder-coated facade and balanced double-column layout create a contemporary rhythm along the wall. Style it within a minimalist lobby clad in stone or concrete to let the numbered doors and sleek hardware read as modern sculpture. A sophisticated essential that blends organization with enduring luxury.

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Upgrade your mailroom with this USPS-approved, secure 4C recessed unit—order today for streamlined delivery and long-lasting performance.

Installation