Features: Heavy-duty 16 gauge steel body construction and extra thick 9 gauge steel door. Electronic lock with key backup. Interior light automatically illuminates when opening the safe. LED visual warning light when battery is running low. Includes concrete anchor bolts for mounting. Specifications: Exterior: 20.5" x 14.8" x 8" Interior: 20.3" x 12" x 7.5" Weight: 32 lbs.