NF P50-775-4*NF EN 12412-4:2004 Thermal performance of windows, doors and shutters - Determination of thermal transmittance by hot box method - Part 4 : roller shutter boxes
2004NF P50-775-4*NF EN 12412-4:2004 Thermal performance of windows, doors and shutters - Determination of thermal transmittance by hot box method - Part 4 : roller shutter boxes