Our twinwall and fourwall polycarbonate offers high impact resistance, excellent heat retention and 80% light transmission. Includes anti-condensate coating to prevent dripping. Our Multi-wall Polycarbonate Sheet is designed and engineered specifically for commercial greenhouse use and Patio cover. Our product are available in 4-foot or 3-foot widths in clear or bronze color. Panels offers 99.5% UV protection. The multiwall design and light weight of the sheets enables a reduction in cost of the supporting structure. Shatterproof polycarbonate coupled with integrated UV resistant co-extruded layer yields long service periods backed up by a 10 year limited warranty. The cellular multy-layer structure reduces heating costs in winter while minimizing excessive heat in summer. A special coating on the bottom side eliminates condensation dripping. Panels blocks ultraviolet rays that burn plants and living tissues, and transmits only beneficial radiation. Light transmission = 80% -R Value = 1.9 -UVI -Can be easily cut in any pattern using a circular saw with a fine tooth blade.