One Hour Fire Safe Comblock - 1.2 cu. ft. The SentrySafe Combination Fire Safe is designed to protect documents, digital media and other valuables from fire and theft. With 60% bigger bolts than traditional safes and a pry-resistant hinge bar, this safe provides additional security against unauthorized access.. Features One Hour Fire Safe Comblock - 1.2 cu. ft; Specifications Dimension: 19.8 x 18.2 x 20.9 in.; Cube: 7531.52; Color: Black; Country of Origin Code: United States of America; Exterior Dimensions: 17.8" H x 16.3" W x 19.3" D; Interior Dimensions: 13.8" H x 12.6" W x 11.9" D; Lock Type: Key and combination; Weight: 92.14 lbs;.