Steel Door with Frame Door Design Quick Mount Lock Type Mortise Frame Type 12 Gauge Steel Fully Welded Material 18 Gauge Steel Hand RHR Thermal Insulation U-Factor None Door Opening Height 80 in Door Opening Width 36 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 Includes 3 Ball Bearing Hinges 1 Mortise Lockset 1 Door Closer 1 Threshold Weatherstripping With Door Sweep