The three-layer structured rectangular sheet offers superior thermal insulation compared to traditional double-layer polycarbonate sheets, making it suitable for applications with high thermal insulation requirements. This sheet is designed for easy and quick installation, and it will not crack or break when cut or drilled. Its lightweight structure saves more steel frame material while also providing an aesthetically pleasing appearance. The three-layer sheet is available in thicknesses ranging from 6mm to 16mm. All sheets come with a 10-year warranty.