Steel Door, Flush, Door Type 2, Lock Type Cylindrical, Material 18 Gauge Steel, Hand Non Handed, Thermal Insulation U-Factor 0.16, Door Opening Height 80 In., Door Opening Width 36 In., Thickness 1-3/4 In., Agency Compliance UL Fire Rating, For Use With Frames 1PHW1, 1PHV6, 1PHV7, 1PHV2, Includes Polystyrene Core, Closer Reinforcement Channel