Porous Polycarbonate, often also called structural Polycarbonate, cellular Polycarbonate, channel Polycarbonate or multilayer Polycarbonate. The name "Cellular" is used because of Polycarbonate's own structure. The air remaining in the space (cell) between the separating walls inside the Polycarbonate panel provides heat insulation property and the filler (separator) forming these walls provides both structural rigidity and Flexibility to the Polycarbonate panel.