Name Twin-Wall Polycarbonate Sheet Model No. Twin-Wall Polyc Country of Origin China Product Description Twin-Wall Polycarbonate Sheet These twin-wall polycarbonate sheets are excellent roofing materials, and are widely used for dormer windows, skylights, extended porches and greenhouses, commercial spaces in hotels, coffee shops, boutiques and beauty parlor and also public spaces in banks, hospitals, bus stops, etc. Furthermore, this superior building material has the following features: 1) High impact strength: up to 80 times stronger than glass 2) Transparency: 83% of normal glass 3) Anti-ultraviolet rays: produced by adopting co-extrusion method 4) Fireproof: rated Class B1 according to QB8624-1997 standards 5) Heat resistance: can lower indoor temperature to ensure comfort Specifications 1) Thickness: 4mm, 6mm, 8mm, 10mm 2) Maximum width: 2100mm 3) Length: any dimensions 4) Specific gravity: 1.2 5) Color: clear, blue, light-green, lake-blue, gray, opal, brown, etc. Inner packing:Both sides of each sheet are covered by protection film. Outer packing:Normally without outer packing (2100 x 5800mm size suitable for container)