The Heirloom Series is Sun Welding's home and office series, offering the best in home security. The Heirloom Series comes standard with a solid 3/16" steel plate door and 12 gauge solid steel body. The Heirloom comes with your choice of a mechanical day locking dial or electronic keypad. The lock is protected by a 1/4" hard plate and 1/2" absorption plate, to resist from impact, drilling, or punch attacks . The independent bolt works are protected by two spring loaded re-locking systems, which lock the entire bolt works together. The bolt works offers three active bolts on the opening side of the door and five dead bolts on the hing side of the door. The Heirloom comes complete with a thirty minute fire rating (available upgrades to 1.5 hours). The UL fire insulation protects all six interior surfaces. The exterior comes in your choice of gloss colors. The finishing touch is the hand applied artwork. The Heirloom offers the Sun Welding quality in protection and strength for your valuables and firearms. Proudly made in America!