The U-value of a 5×5 m sectional overhead door from Prido varies with the section type: ISO 40 mm has a U-value of 1.02 W/m²K, ISO 60 mm has 0.77 W/m²K, and ISO 80 mm achieves an impressive 0.49 W/m²K. The ALU 40 mm fully glazed section has a U-value of 3.87 W/m²K. Therefore, ISO 80 mm is recommended for applications with the most stringent energy requirements.