JIS R 3107:2019 specifies the calculation of thermal transmittance through the central part of glazing used for building apertures (U value). The combined edge effects due to the thermal bridge of insulating glass spacer and of vacuum glass edge seal, and of the window frame are not included.
JIS R 3107:2019
Original price was: $106.00.$53.00Current price is: $53.00.
Calculation of thermal transmittance of glazing
Japanese Industrial Standard / Japanese Standards Association , 01/01/2019
