Impact-Resistant Riot Protection - Will Not Shatter Like Glass Polycarbonate sheet (Standard General-Purpose Glazing Grade) will transmit 86% of light.500".Polycarbonate glazing sheet is available in solar gray and bronze in thicknesses from . This product is UV stabilized, has a heat deflection temperature of 270°F at 264 PSI, and has a smoke density rating less than 75.