Protex LPD-161 Safe Low-Profile Wall Mount Drop Box The perfect way to lock and secure suggestions, ballots, mail, money, rent checks and more Drop opening: 9-1/4 (W) x 7/16 (H), will accept legal size paper. Safe comes with two keys. Tubular-style key lock with double "D" configuration. Indoor use only! Low profile The perfect way to lock and secure suggestions, ballots, keys, mail, money, rent checks and more^Drop Opening: 9-1/4" (W) x 7/16" (H), will accept legal size paper.^Metal baffle to protect slot^Safe comes with two keys. Tubular-style key lock with double "D" configuration.^Indoor use only!