4B+ Horizontal Mailbox, 21 A Doors (20 usable), Front Loading, Aluminum, USPS Access

4b+ horizontal mailbox, 21 a doors (20 usable), front loading, aluminum, usps access features 4b+ horizontal mailboxes are u.s.p.s. approved only for replacement and/or retrofit installations for new installation and/or renovations, replacement to a different location, refer 4c horizontal mailboxesmanufactured by industries to usps-std-4b+ specifications ideal for apartments, condominiums, commercial buildings and residential developments made entirely of aluminum feature a durable powder coated finish available in aluminum, bronze, gold and sandstoneavailable in "a" size doors (6-1/2" w x 5-1/4" h) and larger"b" size doors (13" w x 5-1/4" h)units with standard "a" size doors are available in 3, 4 or 5 doors wide and 5, 6 or 7 doors high units with larger "b" size doors are available in 2 doors wide and 5, 6 or 7 doors high doors include a 5 pin cylinder cam lock (with 2 keys) one mailbox opening is required for a master postal lock (installed by the u.s.p.s.) and cannot be used for mail distribution front loading door panel swings on a continuous hinge include factory installed 3/4" w x 1/4" d trim and a solid rear cover