Salsbury Maximum Height Recessed Mounted 4C Horizontal Mailbox | 10 Doors and 4 Parcel Lockers with USPS Access - Rear Loading

The Salsbury 3716D-10ARU is a USPS-approved, recessed-mounted 4C horizontal mailbox manufactured to USPS-STD-4C specifications for new construction and major renovation projects in apartments, commercial buildings, and residential developments. Configured as a double-column, maximum-height unit at 57⅛" tall, it accommodates 10 MB1 tenant compartments and 4 parcel lockers, 2 PL4.5s (15½" H) and 2 PL5s (17¼" H), in a rear-loading configuration suited to pass-through wall installations where carrier mail delivery is accessed from behind the unit through heavy-duty rear access doors with latches and continuous hinges. All 4 parcel lockers meet and exceed the USPS minimum 15" height threshold, satisfying the 1:5 ratio for this compartment count with significant margin. Constructed from heavy-duty aluminum with stainless steel hardware, the unit includes factory-installed trim and a 4C connector kit for linking multiple units. Security & Construction Features USPS-approved outgoing mail compartment with fixed front panel, no USPS master lock access door on front 10 tenant doors each fitted with a heavy-duty cam lock with dust/rain shield and 3 keys 4 integrated parcel lockers, 2 × PL4.5 (15½" H) and 2 × PL5 (17¼" H); all exceed USPS 1:5 ratio requirement Heavy-duty rear access doors with latches and continuous hinges for carrier mail loading Outgoing mail slot: 11¾" W × ¾" H with weather protection hood Heavy-duty aluminum construction with stainless steel hardware Durable powder-coated finish available in aluminum, bronze, sandstone, and black Factory-installed 1" W × ¼" D trim for clean recessed installation Includes 4C horizontal mailbox connector kit for linking multiple units (hardware included) ADA height compliant units available ISO 9001:2015 certified Specification Specifications Dimensions 31.125" W × 57.125" H × 16.5" D Weight 150 lbs Number of Tenant Doors 10 (MB1 Size) MB1 Door Dimensions 12¾" W × 3¼" H each Number of Parcel Lockers 4 (2 × PL4.5, 2 × PL5) Parcel Locker Heights PL4.5: 15½" H | PL5: 17¼" H (all exceed USPS 1:5 ratio requirement) Column Configuration Double Column (2 Doors Wide) Unit Height Category Maximum Height Lock Type Heavy-Duty Cam Lock with Dust/Rain Shield (3 Keys per Door) Outgoing Mail Slot 11¾" W × ¾" H with Weather Protection Hood Carrier Access Rear Access – Heavy-Duty Rear Door(s) with Latch and Continuous Hinges (no front USPS master lock door) Loading Type Rear Loading Mount Type Recessed Mounted Access Type USPS Access – Rear Loading Indoor / Outdoor Use Both Primary Material Heavy-Duty Aluminum Hardware Stainless Steel Finish Powder Coated – Aluminum Available Colors Aluminum, Bronze, Sandstone, Black Intended Use Apartments, Commercial Buildings, Residential Developments – New Construction and Major Renovations What's Included Mailbox Unit, Factory-Installed Trim (1" W × ¼" D), Heavy-Duty Rear Access Door(s) with Latch and Continuous Hinges, 4C Horizontal Mailbox Connector Kit Model Number 3716D-10ARU Compliance & Certifications USPS Approved | ISO 9001:2015 Certified | ADA Height Compliant Units Available Lead Time Usually ships within 1–2 weeks. Downloads More Product Information Product Overview Installation Instructions Technical Drawing ADA Compliant Units Product Configurations