Optional Non-locking Thumb Latch. Mail House Post Mount Locking Mailboxes from National Mailboxes are manufactured from electro-galvanized 20 gauge heavy duty steel with a stainless steel mail flap. Mail house residential mailboxes are accessed from the front through a 13″W x 9″H locking door. They can be surface mounted or mounted on bolt mounted mailbox posts (H4765), in-ground mounted mailbox posts (H4795), or a base of your selection.
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