MMI Door Majestic Steel Front Door unit comes with our MSystem 2-year warranty on both the Door Component and the Base Prehung System, as well as a 10-year warranty on the Glass Lite. All of our Majestic Steel doors are galvanized to resist rust and corrosion, are comprised of 24-Gauge, high quality steel with 22-Gauge steel stiles and rails for additional strength and security and come with a one-piece, high density polystyrene core delivering excellent insulation allowing it to meet or exceed current energy code standards. Common door size is 36 in. x 80 in. with 14 in. sidelite. Unit dimension is 53 in. x 81.75 in. The suggested rough opening is 53.5 in. x 82.25 in. This unit comes with a 4-9/16 in. wide primed FrameSaver frame.