Salsbury 2200 series parcel lockers offer tenants a convenient way to receive packages on site and are fit with a two (2) key security system. When the U.S.P.S. or an individual delivers a parcel to the locker, a parcel locker key is placed in the recipient�s mailbox. Once the recipient opens the parcel locker, the key is automatically retained in the lock until it is removed with a control key. The units have 1/4'' thick extruded aluminum doors with a durable powder coated aluminum finish and are equipped with a hinged rear door which allows access from the rear. Parcel lockers are designed to fit into the rack ladder and data distribution systems and Free-Standing Mail Centers.