The design of energy-saving windows Brandline Passive PF-88 is characterized by a specially thickened window frame made of 4-layer scantling. This solution allows free installation of energy – efficient 3-pane glass packages with heat protection parameters from 0,09 Btu/h·ft2·°F [0.4 to 0.6 W/m2·K]. In addition, the use of The SWISSPACER Warm frame effectively reduces heat loss and glass fogging.
Thanks to the additional grooving chamber, double internal sealing on the circumference of the wing, and also due to the use of three sealing gaskets made of material resistant to weather conditions and placed on the outer edge of the wing, we obtained a modern window system with a heat transfer coefficient from 0,14 Btu/h·ft2·°F [0,80 W/m²·K]