Full 60 minutes of fire protection at 1400°F - Fireboard protection in the ceiling walls floor & door - Heat activated door seal expands up to 7 times its size which seals the door edge to help keep out heat & smoke - Thick 2.00 mm steel composite door & body with external corner reinforcements on critical attack points - Single hardened steel plate protects the lock from drill - Large door bolts (1" diameter) 4 door bolts total - UL Listed commercial-grade Type 1 electronic lock - Hand antiqued exterior finish with distressed leatherette interior - External Dimensions: 18"Hx18"Wx14"D - Wt.: 90 lbs.