• Insulated glass units up to a maximum thickness of 26mm
  • Multi point locking to BS 7950 or traditional single point locking
  • PAS24:2016 on top hung vents, single and double doors when using our multi point locking systems
  • Various glazing options
  • Produced from 98% recycled steel source material

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.