What looks like a window for a new construction is in fact the latest generation of the RF1 design renovation window. Thanks to 4B’s patented interchangeable frame system, occupied properties can be renovated in the shortest possible timeframe, regardless of the season, weather, size, or complexity. This is because the windows are installed into the existing frame in a minimally invasive manner, without damaging the brickwork. The new RF1 design completely covers the old frame and, thanks to customizable shutters and 15 glazing options, is a window that meets the highest standards in terms of design and aesthetics. The leading innovation solution to renovate time-efficiently and cost-effectively – with Swiss renovation expertise from 4B.
