Honeywell Model 2101 Fire Safe has a spy-proof 4# combination dial lock which provides a high level of security. This lock is designed to be used in conjunction with the entry key. Two entry keys are included. Protects the contents in a fire of up to 1700° / 927°C for one hour, keeping the internal temperature less than 350F. Water resistant door and cabinet design. There are 2 solid steel like lock bolts for added security. The interior capacity is 0.52 cubic feet of storage. The outside dimensions are 12.5"H x 15.7"W x 14.4"D. The inside dimensions are 8.7"H x 12.6"W x 8.3"D.Backed by a 7 year limited warranty and a lifetime after-fire guarantee.