High speed hard door made of aluminum alloy and filled up with polyurethane for insulation. Transparent window options according requirement. It is an extremely fast, safe and reliable exterior door. FEATURE Door Construction Aluminum alloy with Polyurethane foaming Panel Thickness 2 R-Value 13 Exterior & Interior Aluminum 21-Gauge Opening Speed 30 90/s Closing Speed 23 39/s Maximum Size Pressure/Wind Resistance Up to 90 PSF COLORS WhiteYellow -
