For maximum insulation, Prido’s overhead sectional door with ISO 80 mm sections is recommended, with a U-value of 0.49 W/m²K for a 5×5 m opening. This is approximately 85% better than a fully glazed ALU 40 mm section (3.87 W/m²K). ISO 80 mm is particularly suitable for heated premises where energy costs are important and quickly pays for itself through lower operating costs.