Codes up to 8 digits, solid steel construction with durable powder coating finish, 4 AA batteries, 2 emergency back-up keys and 4 anchor bolts included. External dimensions of 9-7/8 in height x 13-3/4 in width x 9-7/8 in depth, internal 7-1/4 in height x 13-1/2 in width x 9-5/8 in depth. Not fireproof.