Doors are fabricated from 1/8" thick aluminum plate and have a continuous hinge for the entire height of the door. Each door has a dual lock mechanism that retains the tenant key until released by the postal control key. Door lock is a 5-pin cam lock and the key retainer lock is either an Arrow postal service lock or a Master dead bolt lock. Parcel lockers are compatible in size and construction and include trim to form an integral unit with the mailboxes and mail collection units. Standard finish is 628 natural anodized aluminum.