7'x19' standard hollow polycarbonate sheet size for 20ft 

Transparent PC solar panels can be used in residential skylights; Industrial plant and warehouse lighting ceilings; Transparent PC solar panels can also be used in rain shelters at subway entrances and exits, stations, parking lots, shopping malls, pavilions, lounges, and corridors; Sound barriers for sports venues and highways; Transparent PC solar panels cover swimming pools and greenhouses; Lighting ceilings for office buildings, department stores, hotels, villas, schools, hospitals, sports venues, entertainment centers, and public facilities. Features of polycarbonate sheet size: 1) Impact strength:  850J/m. About 200-350 times of common glass. 2) Light weight:   About 1/2 times of glass of the same thickness. 3) Light transmission: 80%-92% for different thickness of clear color. 4) Specifi…