New Quadrafin
The best air permeability performance for sliding
Schlegel G3-QF (Quadrafin) is the new brush seal with an extruded base for sliding windows and doors, designed with advanced features that make it the ideal solution to counter air infiltration.
Quadrafin has been significantly optimized through the following features:
- Double-raised center fin that provides a more effective barrier against air infiltration (see comparative table);
- More flexible base, easy to fit into even the narrowest channels;
- Thicker silent fins that provide optimal air tightness without annoying noise.
Competitor: Brush Pile with central fin +0.5 mm
with 20% compression.
Schlegel G3-QF (Quadrafin): Brush Pile with central fin +1 mm with 20% compression.
The main colors of the multi-filament brush are white, grey, and black, but a wide range of colors are available upon request to meet the aesthetic requirements of coordinating with any window frame.
The pluses of the new Quadrafin add up to the other advantages of the previous version:
 | Easy to insert |  | UV stable and chemically inert, for extended longevity |
 | PP yarn treated with silicone to resist water, mould and mildew |  | Improved sliding and excellent resistance to abrasion and static build-up |
 | Very low air permeability | ||
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