Twin-wall hollow polycarbonate sheet 1) Thickness: 4mm.4.5mm,5mm,6mm,8mm,10mm,12mm 2) size: 2100 x 6000mm TRIPLE layer hollow pc sheetTwin-wall hollow polycarbonate sheet(4.28 0651) Thickness: 4mm.4.5mm,5mm,6mm,8mm,10mm,12mm2) width and length: 2100 x 6000mm3) Color: clear,blue,lake-blue,green,brown,grey,opal-white,red,etc4) Light weight, High impact strength 5) Fire resistance 6) Good Light ...