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Description
Window FTT Thermo achieves a U-value for the whole window of 0.94 W/m2K which provides large energy savings. FTT is a centre pivot type of window. The window has a specially designed 30% thicker sash in which the glazing unit with a U-value of 0.5 W/m2K is placed. This window is very often installed in energy saving houses where everything has to be very tight. Therefore the FTT window does not have an air inlet.