An advanced steel window introduced in the 1990s, W40 windows are ideal for larger projects such as schools and public buildings, but equally may be used in all types of property where strong, durable frames, efficient opening casements and robust fittings are required.
W40 steel window frames are suitable for metal window refurbishment projects where the pattern of the original fenestration is to be maintained.
The W40 steel window frame are preferred by architects for metal window refurbishments due to the advanced strength of steel and for fulfilling the requirements for listed buildings.