Salsbury Industries 3711S-04AFU 4C Horizontal Mailbox

Product Description

The SALSBURY INDUSTRIES 3711S-04AFU is a 4C horizontal mailbox designed for front-load mail delivery in compliance with USPS regulations. Built from aluminum in a silver finish, this single-column unit houses four MB1 tenant compartments along with one parcel locker (PL5) door, making it suitable for multi-tenant residential and commercial mail distribution. At 44 inches tall and weighing 77 pounds, it is a substantial, wall-mount-ready unit intended for installation by qualified contractors or facilities maintenance professionals familiar with postal equipment standards.

This mailbox is intended for multi-unit residential buildings, apartment complexes, condominiums, and commercial properties that require USPS-compliant centralized mail delivery. The 4C horizontal configuration meets current Postal Service standards for new construction and renovation projects. The front-load design allows mail carriers to load from the front of the unit, making it suitable for lobby, vestibule, or recessed wall installations where rear access is not available.

Key Features

• USPS-approved 4C horizontal mailbox configuration for compliant multi-tenant mail delivery
• Single column with 4 tenant MB1 mail compartments and 1 PL5 parcel locker door
• Front-load design supports lobby and vestibule installations without rear access requirement
• Aluminum construction in silver finish for corrosion resistance and long service life
• Substantial 77-pound unit built for permanent, wall-mount installation

Compatibility

Designed as an OEM-style 4C horizontal mailbox unit for new construction and renovation installations requiring USPS-compliant centralized delivery equipment in multi-tenant residential or commercial buildings.

Installation Notes

Installation of 4C mailbox systems must conform to USPS 4C mailbox standards and applicable local building codes. The unit should be mounted by a qualified contractor using appropriate anchoring hardware rated for the weight of the assembly. Ensure the mounting surface and rough-in dimensions accommodate the unit footprint before installation. Do not modify the locking mechanisms or door assemblies, as alterations may void USPS approval.