Dock Door Embossed Design White Opening Height 9 ft Opening Width 7 ft 10 in Door Material Steel Door Height 9 ft Door Width 8 ft Door Thickness 3 in Minimum Height Clearance 19 ft Insulated Yes Insulation Value R-16.25 Includes Windows Yes Gauge 26 Finish Painted Acrylic U Shaped Bottom Astragal 14 ga Galvanized Steel Hinges HD Commercial Rollers with (10) Ball Bearings 2 in Angle Mounted Full Vertical Lift Track Leaf Bumpers and (2) Windows