The perfect way to lock and secure suggestions, ballots, and mail. Large drop door can accommodate thick envelopes wide drop door 8-1/4" x 1" built-in lock includes 2 keys and keeps contents confidential. Includes: mounting screws wall mount, can be mounted on the wall with 2 screws plastic spring loaded push flap for drop dimensions: 10-1/8"W x 12-3/4"H x 4-3/4"D.