Browning Safes Pro Series TL-30 is designed to provide highest security and fire protection for your firearms with its dual layers of 11-Gauge steel, 2-1/2" high strength aggregate concrete, and 120 minutes of 1,750° fire resistance. With its 1-1/2" diameter chrome bolts, four passive re-lockers, two back-mounted re-lockers, and the SG Mechanical or SG top-lit electronic lock, you can have the peace of mind that your valuables are kept safe.