Protective Screen Hanging Transparent Polycarbonate Ceiling - Measurement: 70x100 cm. -Thickness: 3mm. -Made of 3 mm thick TRANSPARENT POLYCARBONATE. Does not yellow. No Combea. -More resistant than methacrylate. Greater resistance against accidental blows. -Can be used outdoors. Does not yellow like other materials. It also does not buckle or deform over time. -Self-assembling, no tools required. -Also as a security measure, separator, prevention, etc.