Salsbury Maximum Height Free-Standing 4C Horizontal Mailbox | 20 Doors and 2 Parcel Lockers with Private Access

The Salsbury 3916D-20BFP is a 4C free-standing horizontal mailbox unit from the 3900 Series, designed for colleges, schools, private postal centers, corporate mail centers, military bases, government agencies, and other applications requiring high-density private mail delivery infrastructure in locations where a wall-mounted installation is not desired or available. This double-column, maximum height unit combines a 4C horizontal mailbox module with a matching free-standing enclosure and master commercial locks, housing twenty tenant compartments and two integrated PL4.5 parcel lockers within a self-supporting structure requiring no wall attachment and only minor assembly. The black powder coated finish delivers a clean, professional aesthetic, and front-loading access through easy-opening master door panels makes this unit well suited for open floor environments and controlled-access areas where USPS carrier access is not required. Security & Construction Features Heavy-duty aluminum body with stainless steel hardware throughout, corrosion-resistant for indoor and outdoor installations Each tenant door fitted with a heavy-duty cam lock, dust/rain shield, and 3 keys for individual compartment security Master commercial lock(s) included with 2 keys controlling front-loading master door panel access Front access via 1 or 2 easy-opening master door panels for efficient carrier or facility administrator mail distribution Two integrated PL4.5 parcel lockers (15 1/2" H each) provide dedicated package delivery compartments sized for standard parcel dimensions Outgoing mail compartment with master commercial lock access door, 11 3/4" W x 3/4" H mail slot, and weather protection hood; compartment is locked and cannot be used for mail distribution Free-standing enclosure provides a complete, self-supporting installation solution requiring no wall attachment, suitable for open floor placement Durable powder coated finish in black, also available in aluminum, bronze, and sandstone for long-term finish integrity in high-traffic environments ADA reach compliance achievable when installed with tenant locks in the top row no more than 48" above the floor and the bottom of the lowest row no less than 28" above the floor Specification Specifications Model Number 3916D-20BFP Outside Dimensions 31 3/4" W x 72 1/8" H x 18 1/2" D Weight 255 lbs Unit Height Configuration Maximum Height (72 1/8") Column Configuration Double Column (2 doors wide) Tenant Compartments 20 x MB1 doors (3 1/4" H x 12 3/4" W each) Parcel Lockers 2 x PL4.5 (15 1/2" H each) Door Locks Heavy-duty cam lock with dust/rain shield; 3 keys per door Master Lock Master commercial lock(s) included with 2 keys Material Heavy-duty aluminum body; stainless steel hardware Finish Black (also available in Aluminum, Bronze, Sandstone) Mount Type Free-Standing (includes matching enclosure; no wall attachment required) Loading Front Loading (1 or 2 easy-opening master door panels) Access Type Private Access Suitable Use Indoor or Outdoor; Colleges, Schools, Corporate Mail Centers, Military Bases, Government Agencies, Private Postal Centers Outgoing Mail Slot 11 3/4" W x 3/4" H slot with weather protection hood; master commercial lock access door included What's Included 4C horizontal mailbox unit; matching free-standing enclosure (3916D); master commercial lock(s) with 2 keys; minor assembly required Series Salsbury 3900 Series   Compliance & Certifications  ISO 9001:2015 Certified | ADA Reach Compliant (installation-dependent) Lead Time Usually ships within 2-3 weeks Downloads More Product Information Product Configurations Installation Instructions Technical Drawing ADA Compliant Units Product Overview