Features There is a clip at the top of the door to use for outgoing mail. Made of 14-gauge and 16-gauge galvanized welded steel. Innovative baffle door design accepts mail bundles and small packages but prevents fishing. Stainless steel hinges for ease of use. Includes vandal-resistant flag, 3 keys, floor liner & hardware for installation. Patented anti-pry latch locking mechanism to impede leveraged entry. Locking access door with commercial-grade high-security wafer lock. Postmaster General Approved Post is not included