Salsbury Industries 3710D-10AFU* 4C Horizontal Mailbox

Product Description

The SALSBURY INDUSTRIES 3710D-10AFU* is a 4C horizontal mailbox unit built to USPS-STD-4C specifications. Standing 37.5 inches high in a double-column configuration, it houses 10 tenant mail compartments and 2 integrated parcel locker doors in a front-load layout. The housing is constructed from heavy-duty aluminum with stainless steel hardware and a durable powder-coated finish. Each tenant door ships with a heavy-duty cam lock, a dust and rain shield, and 3 keys. This unit is intended for installation by contractors, property managers, or postal facility planners working on new construction or major remodel projects.

This mailbox unit is designed for multi-tenant residential and commercial applications including apartment complexes, condominiums, and commercial buildings. USPS-STD-4C mandates a minimum of 1 parcel locker for every 10 tenant compartments, and this unit meets that ratio with its 2 parcel locker doors. It is rated for both indoor and outdoor installation. The unit ships in a single package and is available in aluminum, bronze, gold, and sandstone finishes. An outgoing mail compartment is included, featuring the factory-reserved USPS master lock access door and a 10.75 inches wide by 0.75 inches high mail slot with weather protection hood.

Key Features

• Built to USPS-STD-4C specifications and approved for use in new construction and major remodel projects
• Double-column configuration with 10 tenant mail compartments and 2 parcel locker doors
• Heavy-duty aluminum construction with stainless steel hardware and powder-coated finish
• Each tenant door includes a cam lock with dust and rain shield plus 3 keys
• Outgoing mail compartment with factory-reserved USPS master lock access door and mail slot
• Rated for indoor and outdoor use; factory-installed 0.75 inch trim and solid rear cover included

Compatibility

Designed as a USPS-STD-4C compliant 4C horizontal mailbox for use in new construction and major remodel installations at apartments, commercial buildings, and residential developments.

Installation Notes

Installation should be performed by a qualified contractor familiar with USPS-STD-4C mounting requirements and local building codes. Confirm rough-in dimensions against the unit footprint before anchoring. The outgoing mail compartment lock is installed exclusively by USPS personnel and must not be modified or bypassed. Follow all applicable local codes for recessed or surface-mounted postal equipment.