Why is the fire rating test on my gun safe at 1200 to 1500 degrees?
A. Although gypsum board is an excellent insulator it will not insulate for as long or for temps as high as a record safe or fire proof filing cabinet. There are gun safes available that will offer 45 minutes to 120 minutes of fire resistance at temperatures up to 1500 degrees, with an internal temperature of 350 degrees. Q.