Steel Door with Frame Door Design Quick Mount Lock Type Push Bar Rim Exit Device With Locking Trim Frame Type 12 Gauge Steel Fully Welded Material 18 Gauge Steel Hand RHR Thermal Insulation U-Factor None Door Opening Height 84 in Door Opening Width 36 in Window Height 34 in Window Width 22 in Thickness 1-3/4 in Overall Depth 2-1/4 in Agency Compliance UL Listed 1.5 Hour Fire Rated For Use With Pre-Existing Door Openings