Security Door Door Type ST 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 1PHT4 1PHU3 Includes Door Closer Lock Hinges 7-3/8 in 37-5/16 in 67-1/4 in 38-7/16 in