D3694 Narrow Lite Hollow Steel Door Door Type 2 Lock Type Mortise Material 16-Gauge Thermal Insulation U-Factor 0.41 Door Opening Height 80 in Door Opening Width 36 in Window Height 26 in Window Width 5 in Thickness 1-3/4 in Agency Compliance ANSI A250.8-1998 UL For Use With Frames 1PHU7 1PHV2 1PHV6 1PHW1 Includes 1/4 in Clear Wire Glass with Safety Film Fire Rated For 90 Minutes 4-7/8 in 35-1/4 in 65-3/8 in 36-1/4 in 80 in