The Master Lock 5401D Wall Mount Lock Box features a 3-1/4 in. (83 mm) wide metal body for durability. The wall mount design offers permanent installation. Set your own 4-digit combination for keyless convenience and increased security. The shutter door protects combination dials from weather, dirt and grime, and molded body and vinyl coated shackle prevent scratching. The Limited Lifetime Warranty provides peace of mind from a brand you know and can trust. Color: Gray.