The Master Series is Superior’s best-selling safe. This masterpiece has it all–the right combination of security, fire protection, style and enduring value. The Master’s first line of defense is its body and door construction. Its 10-gauge steel body, with Double-Steel Door Casement™, is almost 6 times stronger than the lightweight 14-gauge box store safes. The body is pressure formed with a 5/8″ corner radius bend, increasing strength and providing distinctive styling. Its Double-Step™ door contains 3/8″ of steel thickness, 3/16″ outer steel plus a 12-gauge inner steel plate. The door edge is increased to 3/4″ using multi-layer reinforcements. The door is approximately 38 times stronger than the lightweight China- built containers. (see Steel Strength chart) The Master Series provides state-of-the-art door defense systems including: full inner door steel, Cam-Lock™ pressure reliever, Diamond-Embedded Armor Plate™ lock protection and a mechanical relocking system. In addition to its heavy steel construction, the Master has four-way active boltworks, with 1-1/2″ diameter door bolts. Its fire rating is unsurpassed in its class at 1650° for 90 minutes. Its mirror-like exterior finish and full velour interior adds a lasting touch of class. Besides the attractive style and finish, the Master Series provides a heavy steel foundation–a foundation that will provide years of security.