The new series of windows and window doors F57 is the result of an accurate technical and stylistic research aimed at considerably improving the performance and at creating a new style by keeping unaltered the sobriety which has ever since characterised our choices..

The “classic” 57mm window can be equipped with a double seal to obtain a more efficient defence against noise and weather conditions. The rain water drain channel has been improved, and there are between 10 and 12 closing points (depending on the type of window sash). From the point of view of the design, the new window shows an important new feature: both the drip flap and the joint cover are fixed without nails nor any other visible means of assembly. The window profile shows a more relevant bevel, which makes the window look trendier and more attractive.

Another innovation in terms of design is, that the F57 window can be equipped (upon request) with the same type of hinges for both the ordinary and the trapdoor version. This renders the window certainly more pleasant and more modern to look at..

Thanks to its high technological content, the certification for the F57 series has been obtained for a “basic window”. This means that, by employing superior quality timber and glass, the performance reaches a top level in terms of thermal and acoustic insulation, jointing, etc..
F57 windows have obtained the certification for versions up to 4 sashes and for a wide range of window sizes covering almost the entire range of ordinary joinery.

The peculiar shape of the aluminium drip flap for the window door, which is the result of a research made at Stenfis, allows to ensure the same certification standards as for the window.