Made entirely of aluminum, Salsbury 3600 series U.S.P.S. approved 4B+ standard horizontal mailboxes are available as FRONT LOADING units or REAR LOADING units. If the unit is front loading, a front loading door panel swings on a continuous hinge. One mailbox opening is required for a master postal or commercial lock and cannot be used for mail distribution. If the unit is rear loading, all openings are usable. Units are available with standard A size doors and larger B size doors. Units with standard A size doors are available 3, 4 or 5 wide and 5, 6 or 7 HIGH. Units with larger B size doors are available 2 wide and 5, 6 or 7 HIGH. 4B+ standard horizontal mailboxes can receive mail from either the US POSTAL SERVICE or from a PRIVATE INDIVIDUAL. Each door includes a five (5) pin cylinder cam lock with two (2) keys and a 2'' W x 5/8'' H clear plastic card holder (card included) to identify the tenant's name and/or box number. The 16-1/2'' D compartments are made of sheet aluminum.

Salsbury 4B+ standard horizontal 3600 series mailboxes have been approved to the required security upgrades of USPS-STD-4B+ and are ideal for apartments, condominiums, commercial buildings and many other applications. A front loading door panel swings on a continuous hinge. One mailbox opening is required for a master postal lock and cannot be used for mail distribution. Units include factory installed 3/4"W x 1/4"D trim and a solid rear cover. Custom engraved placards (related item #3667) are available as an option upon request.