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home > Salsbury 3700 Horizontal Series Recessed-Mount Mailbox with 3 Parcel Lockers > Salsbury 3700 Horizontal Series Recessed-Mount Mailbox with 3 Parcel Lockers

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Salsbury 3700 Horizontal Series Recessed-Mount Mailbox with 3 Parcel Lockers3700 Series Recessed 4C Mailbox, 3 Parcel Lockers USPS approved recessed 4C horizontal mailbox constructed from heavy duty aluminum with stainless steel hardware. Designed for apartments and commercial buildings, this maximum height double column unit features 15 tenant doors plus three integrated parcel lockers and an outgoing mail compartment. Key Features: USPS 4C Compliance: Approved front loading unit with carrier access door for USPS master lock

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3700 Series Recessed 4C Mailbox, 3 Parcel Lockers

Name: Salsbury 3700 Horizontal Series Recessed-Mount Mailbox with 3 Parcel Lockers
Brand: okunadegoodman.com
SKU: 66814425412
Price: 1208.03 USD
Availability: InStock
Rating: 4.6831000000000005 (2329 reviews)

USPS-approved recessed 4C horizontal mailbox constructed from heavy-duty aluminum with stainless steel hardware. Designed for apartments and commercial buildings, this maximum-height double-column unit features 15 tenant doors plus three integrated parcel lockers and an outgoing mail compartment.

Key Features:

USPS 4C Compliance: Approved front-loading unit with carrier access door for USPS master lock
Durable Construction: Heavy-duty aluminum body with stainless steel hardware and powder-coated finish
Secure Access: Heavy-duty cam locks with anti-fish plate on outgoing mail slot
Integrated Parcel Lockers: Three fully integrated lockers to meet required 1:5 parcel ratio
Flexible Installation: Recessed mount design; connector kit supports multi-unit installations

Please check the Product Data Sheet Here

Specifications Table:

Specification	Details
Series	Salsbury 3700 Series 4C Horizontal Mailboxes
Mounting	Recessed mount
Loading	Front loading with USPS access
Configuration	Double column; 15 tenant doors; 3 parcel lockers; outgoing mail compartment
Overall Dimensions	31.125" W x 57.125" H x 16.5" D
Weight	165 lbs
Construction	Heavy-duty aluminum with stainless steel hardware
Finish Options	Powder coated in aluminum, bronze, gold, or sandstone
Lock Type	Heavy-duty cam locks; carrier access door for USPS master arrow lock
Security Features	Anti-fish plate on rear of mail slot
Door 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; parcel lockers available PL3, PL4, PL4.5, PL5, PL6
Compliance	USPS-STD-4C; ADA height compliant units available
Outgoing Mail Slot	10-3/4" W x 3/4" H with weather protection hood
Included Trim	Factory installed 3/4" W x 1/4" D trim and solid rear cover
Connector Kit	Includes 4C horizontal mailbox connector kit to connect multiple units

Frequently Asked Questions (FAQ):

Q: How many tenant compartments and parcel lockers are included?
A: This double-column unit provides 15 tenant mail doors and 3 integrated parcel lockers, plus an outgoing mail compartment.

Q: Is this mailbox compliant with USPS 4C standards?
A: Yes, it is manufactured to USPS-STD-4C specifications and includes a carrier access door for the USPS-provided master arrow lock.

Q: Can it be installed outdoors?
A: Yes. It is suitable for indoor or outdoor use when recessed-mounted into a wall per manufacturer guidelines.

Q: What are the overall dimensions?
A: Approximately 31.125 in W x 57.125 in H x 16.5 in D.

Q: What finishes are available?
A: Powder-coated finishes include aluminum, bronze, gold, and sandstone; this listing shows the aluminum finish.

Streamlined, Secure, and Architecturally Clean

This recessed 4C mailbox brings a crisp, modern cadence to multi-tenant entries, with a balanced double-column layout that feels intentional and refined. The aluminum face and neatly numbered doors create a graphic rhythm—elevating utility into design. Pair it with a monochrome wall panel or textured stone surround to let the sleek hardware shine. It’s a polished essential for sophisticated, high-traffic spaces.

Upgrade your building’s mailroom with this USPS-approved, secure 4C unit—order today for streamlined delivery and tenant convenience.

Installation