Double Door Frames Door Type 1 Frame Type Masonry/Stud Material 16-gauge steel Thermal Insulation U-Factor 0.41 Door Opening Height 80 in Door Opening Width 96 in Throat Opening Size 4-7/8 in Overall Depth 5-3/4 in Agency Compliance UL 3 Hours Fire Rating For Use With 3TGD5 3TGD6 Includes Multipurpose Stud Anchors and Masonry Wire Anchors 6-5/8 in 37-5/8 in 68-5/8 in 36-15/16 in