The W40 Range of traditional hot rolled steel windows are suited for the replacement of original steel windows in commercial or industrial projects or for public buildings. W40 was introduced as a successor to the W20 steel window section in the 1990's, and is particularly suited for window replacement projects where a wider steel window section is required to provide extra strength.

The W40 window range is

• A durable and versatile heavy duty framing system developed in the 1990's as a successor to W20

• W40 uses the same casement sightline as W20 but with a wider 40mm profile

• The range includes horizontal and vertical pivots

• Is available double glazed, with a double glazed unit up to a 24mm