NF P50-775-2*NF EN 12412-2:2004 Thermal performance of windows, doors and shutters - Determination of thermal transmittance by hot box method - Part 2 : frames
2004NF P50-775-2*NF EN 12412-2:2004 Thermal performance of windows, doors and shutters - Determination of thermal transmittance by hot box method - Part 2 : frames