Polygal's 6-35 Glazing System is a large-span clamping system specially developed for glazing applications using 6-35 mm thick Polycarbonate structured sheets. Sheets are mounted on the system's load-bearing elements during construction of transparent and semi-transparent roofing. The system's large rebate depth (30 mm overlap) makes sheet fastening easier, and prevents glazing failures due to wind and snow loads or thermal expansion.