Product details:

U.S. Post Master approved. 12 and 14 gauge welded steel construction with stainless steel hinges. Anti-pry latch, locking access door with commercial grade anti-pick tube lock. Patented mounting plate for installation. Includes: Installation instructions, reflective house numbers, all necessary hardware, vandal resistant flag and three (3) keys. Durable powder coated finish. Dimensions: 21D x 13.75W x 11.25H.