Salsbury 10 Door High Recessed Mounted 4C Horizontal Mailbox | 3 Doors and 1 Parcel Locker with USPS Access - Front Loading

The Salsbury 3710S-03AFU 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 single-column, 10-door-high unit at 37⅞" tall, it accommodates 3 MB1 tenant compartments and 1 PL5 parcel locker (17¼" H), one of the most space-efficient compliant 4C configurations available, suited to very small buildings, single-unit alcoves, or use as a companion unit within a larger linked bank where both column width and tenant count are minimal. The PL5 meets and exceeds the USPS minimum 15" height threshold, satisfying the 1:5 ratio for this compartment count, and the unit meets ADA reach requirements when installed per specified height guidelines. Constructed from heavy-duty aluminum with stainless steel hardware, the unit includes factory-installed trim, a solid rear cover, and a 4C connector kit. Security & Construction Features USPS-approved outgoing mail/carrier access door with factory-provisions for USPS-installed master lock 3 tenant doors each fitted with a heavy-duty cam lock with dust/rain shield and 3 keys 1 integrated PL5 parcel locker (17¼" H) meeting USPS 1:5 parcel locker-to-compartment ratio requirement Outgoing mail slot: 10¾" W × ¾" H with weather protection hood Heavy-duty aluminum construction with stainless steel hardware Durable powder-coated finish available in aluminum, bronze, black, and sandstone Factory-installed ¾" W × ¼" D trim with solid rear cover for clean recessed installation Includes 4C horizontal mailbox connector kit for linking multiple units (hardware included) ADA reach compliant when installed per height guidelines (top row ≤48" AFF, bottom row ≥28" AFF) ISO 9001:2015 certified Specification Specifications Dimensions 17" W × 37.875" H × 16.5" D Weight 70 lbs Number of Tenant Doors 3 (MB1 Size) MB1 Door Dimensions 13¼" W × 3¼" H each Number of Parcel Lockers 1 (PL5) Parcel Locker (PL5) Height 17¼" H (meets USPS 1:5 ratio requirement) Column Configuration Single Column (1 Door Wide) Unit Height Category 10 Door High Lock Type Heavy-Duty Cam Lock with Dust/Rain Shield (3 Keys per Door) Outgoing Mail Slot 10¾" W × ¾" H with Weather Protection Hood Loading Type Front Loading Mount Type Recessed Mounted Access Type USPS Access – USPS Master Lock Installed by Carrier Indoor / Outdoor Use Both ADA Compliance Meets ADA reach requirements when top row installed ≤48" AFF and bottom row ≥28" AFF 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 (¾" W × ¼" D), Solid Rear Cover, 4C Horizontal Mailbox Connector Kit Model Number 3710S-03AFU Compliance & Certifications USPS Approved | ISO 9001:2015 Certified | ADA Reach Compliant (installation height dependent) Lead Time Usually ships within 1–2 weeks. Downloads More Product Information Product Overview Installation Instructions Technical Drawing ADA Compliant Units Product Configurations