Delivering employees and postmasters must ensure that all inside-letterbox Arrow locks are recovered when buildings are torn down or remodeled.Ĭ. Carriers will report on PS Form 3521, House Numbers and Mail Receptacles Report, all apartment houses that are being remodeled and all unlocked or out-of-repair mailboxes. When an inside-letterbox Arrow lock is no longer needed, the building management must immediately notify the postmaster, who will then send a postal employee to supervise removal of the lock from the master door and return it to the Post Office.ī. Owners or managers of buildings must keep receptacles in good repair. The guidelines for receptacle maintenance and repair are as follows:Ī. A current listing of approved manufacturers and models can be obtained from the office listed in section 632.511. All newly installed or replacement mailboxes must be approved models in accordance with USPS-STD-7. The postmaster sends PS Form 4056, Your Mailbox Needs Attention, to the owners of these boxes to request that they remedy the irregularities or defects. Carriers must report to the postmaster any existing mailboxes that no longer conform to postal regulations.

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