USPS

Arrow Lock – USPS Definition

Arrow Lock

A special type of brass and steel security lock installed in street collection boxes, storage boxes, apartment boxes, banks of apartment house mailboxes, cluster boxes such as neighborhood delivery and collection box units, and other postal mail-receiving receptacles. The name of the lock comes from an image of an arrow stamped below “U.S. Mail” on the reverse side. A special arrow lock key is used to access the lock.

SEC

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