... convenient installation. PC SUN SHEET(Polycarbonate materials) U Profile1) Thickness: 4mm.4.5mm,5mm,6mm,8mm,10mm,12mm2) Standard width ... physical, mechanical, and electrical properties 9) Inhibits condensation10) Customized dimensions, thickness and colors available upon request11) Usage: subway exits, parking lots ... etc. sound absorption wall for freeways, high speed railways Grade A PC U Profile