Security Door Door Type CE Lock Type 7150 Exit Device Material 18 Gauge Steel Hand LHR Thermal Insulation U-Factor 0.41 Door Opening Height 80 in Door Opening Width 36 in Thickness 1-3/4 in Agency Compliance UL Listed 3 Hours Fire Rating For Use With 3KY73 3KY81 Includes Door Closer Lock Hinges 6-5/8 in 37-5/8 in 68-5/8 in 36-15/16 in