Salsbury 4C Max-Height Aluminum Front-Loading Mailbox, 20 Doors, 2 Parcel Lockers

Heavy-duty 4C horizontal mailbox designed for private access in multi-tenant buildings. Constructed from all-aluminum with stainless hardware, it features 20 MB1 tenant doors, two integrated parcel lockers, and a front-loading master door with outgoing mail slot.

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Key Features:

• Durable Construction: All-aluminum body with stainless steel hardware and powder-coated aluminum finish for indoor/outdoor use.
• Secure Access: Heavy-duty cam locks, master commercial lock, and anti-fish plate on outgoing slot to deter tampering.
• Efficient Mail Management: 20 individually numbered MB1 doors plus two fully integrated parcel lockers for larger deliveries.
• Front-Loading Convenience: Master door provides easy service access; includes outgoing mail slot with weather hood.
• Recessed Mount Design: Maximum-height unit sized for built-in installations; factory-installed trim and solid rear cover included.

Please check the Product Data Sheet Here

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Specifications Table:

Specification	Details
Series	Salsbury 3700 Series 4C Horizontal Mailboxes
Mounting Type	Recessed mounted
Access Type	Private access (master commercial lock)
Loading	Front loading
Overall Dimensions	31.125 in W x 57.125 in H x 16.5 in D
Unit Height Category	Maximum Height
Tenant Doors	20 MB1 doors (approx. 3-1/4 in H x 12-3/4 in W)
Parcel Lockers	2 integrated parcel lockers
Outgoing Mail	Slot with weather protection hood; labeled 'Outgoing Mail'; anti-fish plate
Construction	Heavy-duty aluminum with stainless steel hardware; powder-coated finish (aluminum color)
Locking	Heavy-duty cam locks; includes master commercial lock(s) with 2 keys
Included Trim	Factory installed 1 in W x 1/4 in D trim and solid rear cover
Connector Kit	Includes 4C horizontal mailbox connector kit for joining multiple units
Use	Indoor or outdoor
ADA	ADA height compliant units available

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Frequently Asked Questions (FAQ):

Q: What are the overall dimensions?
A: Approximately 31.125 in W x 57.125 in H x 16.5 in D (maximum-height recessed unit).

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Q: Is this unit USPS approved?
A: This configuration is for private access and includes a master commercial lock, not USPS delivery.

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Q: Can it be used outdoors?
A: Yes, it is suitable for indoor or outdoor use with a durable powder-coated finish.

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Q: What sizes are the tenant doors?
A: MB1 doors measure about 3-1/4 in H x 12-3/4 in W.

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Q: How many parcel lockers are included?
A: Two integrated parcel lockers are included in the unit.

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Streamlined Security for Modern Multi-Tenant Hubs

This sleek aluminum mailbox array brings architectural order to busy lobbies and corridors. The crisp, numbered doors and integrated parcel lockers create a refined grid that feels both modern and purposeful. Pair it with warm wood wall panels and matte black signage to balance its industrial edge. It’s a polished essential that elevates mail management into a luxe, organized experience.

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Outfit your building with secure, streamlined mail delivery—choose this Salsbury 4C unit today.

Installation