Fort Knox Safe, will fit up to a 21" barrel shotgun. Practically brand new, just decided I needed something different, great safe! Check out pictures. $275 Great for under the bed or possible in a vehicle. From Fort Knox: SHoTgUN box Home protection is critical but so is securing your weapons. Keep your shotgun or other self defense items close at hand with the Fort Knox Shotgun Box. This heavy duty 10-gauge body with a 3/16" plate door gives great security with a lifetime warranty. The Simplex lock allows quick access with a battery free locking system. Order your Shotgun Box today. 5" h by 9½" w by 45" d 36 lbs