Double Door Frames Door Type 3 Frame Type Masonry/Stud Material 16-gauge steel Thermal Insulation U-Factor 0.41 Door Opening Height 80 in Door Opening Width 60 in Throat Opening Size 4-7/8 in Overall Depth 5-3/4 in Agency Compliance UL 3 Hours Fire Rating For Use With 3TGC6 3TGC7 Includes Multipurpose Stud Anchors and Masonry Wire Anchors 7-3/8 in 37-5/16 in 67-1/4 in 38-7/16 in