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