Details: Strong, formed "B" Rate construction made of 36A solid steel plate for improved security and appearance. Formed door jamb for increased resistance to sledgehammer attack. Four anchor bolt holes. 1/2" thick A36 solid steel plate, recessed 1/2" to increase resistance to pry attack. U.L. listed dual nose keylock (K) Three 1" dia. chromed steel locking bolts. Bolt detent system engages boltwork automatically. Auxillary spring-loaded relocking device. Lock and relock protected by a large carburized hardplate. Great for Retail stores, Restaurants Etc.. Outside Dimensions: 20-1/4"H x 14"W x 14"D Inside Dimentsions: 10"H x 13-3/4"W x 11"D Cubic Inch Capacity: 1,513 Weight. 94 Lbs.