Each safe is engineered with heavy duty vault style hinges along with a full length 1 inch thick locking bar which extends from the top to the bottom of the door. Even after cutting the hinges off of the safe the door cannot be removed. Every safe comes standard with S&G Electronic Lock or UL Listed S&G Group II mechanical dial.
Each Oyster Series safe comes equipped with a glass re-locker (except on FB-450) for additional security during drilling attacks. Another feature the Oyster Series offers is a detent for automatic re-locking (with electronic lock) of your door when closing. UL listed SandG group II Combo lock. 1 top moving bolt, 1 bottom moving bolt. Item Dimensions (in inches) WEIGHT: 440 lbs. Inside Dimensions (in inches) volume is 3.63 cubic feet.