let light in patio roof cover sheets are easy to handle and require less structural size and drilled using ordinary wood working tools hobby greenhouse providing excellent heat retention and natural scatter of sunlight this helps indoor plants grow faster and healthier 4' x 8' clear twinwall panel sale price 11% off* an energy-saving glazing choice because the sheet's flutes trap air between the and cooling costs price after rebate kebet each uv-protected outer surface blocks harmful uv-rays preventing sunburn while letting in plenty of natural light • 6mm thick lightweight and virtually unbreakable • uv-protected on the exterior side click here to shop this panel check out our entire line of panels