2017EN ISO 10077-2:2017 Thermal performance of windows@ doors and shutters - Calculation of thermal transmittance - Part 2: Numerical method for frames
2012EN ISO 10077-2:2012 Thermal performance of windows, doors and shutters - Calculation of thermal transmittance - Part 2: Numerical method for frames (Incorporating corrigendum July 2012)
2003EN ISO 10077-2:2003 Thermal performance of windows, doors and shutters Calculation of thermal transmittance Part 2: Numerical method for frames ISO 10077-2:2003