W20 is the traditional heavy-duty framing system, 32mm wide with 5mm thick flanges, originally developed for commercial and industrial applications, and which was introduced in the early 1960s to consolidate the various commercial steel window ranges available at that time (most notably the Small, Medium and Heavy Universal ranges). It accommodates single and insulating glass units up to 16mm thick in the same profiles simply with a change of bead. Opening windows are weather-stripped using integral gaskets. Hinged casements, hung at top, bottom or side, and swing windows pivoted horizontally or vertically, can all be constructed from the same kit of profiles. Elemental coupling is achieved with simple slender transoms and mullions. All glazing, whether in fixed lights or casements, is in the same plane. It can be divided into small panes with tee glazing bars, having a table face width of no more than 29mm. Opening windows are weather stripped using integral gaskets.
Please click on the following product range for further information
Or contact us on 0207 7272 2294 to discuss your requirements.
The environmental impact of a window system is more than a sum of its component parts..
...Read more
We would be more than happy to come to see you at your convenience..
...Read more
There are many reasons to choose Steel Windows such as our 10 year guarantee..
...Read more
Let us send you a free no obligation brochure with all our products and services..
...Read more