Security Door Exit/Entrance Door Type 1 Lock Type 7150 Exit Device Material 18 Gauge Steel Hand RHR Thermal Insulation U-Factor 0.41 Door Opening Height 84 in Door Opening Width 36 in Thickness 1-3/4 in Agency Compliance UL Listed 3 Hours Fire Rating For Use With 3KY74 3KY82 Includes Door Closer Lock Hinges 6-5/8 in 39-5/8 in 72-5/8 in 40-15/16 in