The U-value of a 5×5 m Prido sectional overhead door varies by 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 has as low as 0.49 W/m²K. The ALU 40 mm fully glazed section has a U-value of 3.87 W/m²K. ISO 80 mm is therefore the preferred choice for the most demanding energy efficiency requirements.