Salsbury 4C Horizontal Mailbox, Maximum Height 56-3/4 in, Aluminum, Private Front Loading, 20 MB1 Doors + 2 Parcel LockersSalsbury 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. Key Features: Durable Construction: All aluminum body with stainless steel hardware and powder coated

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