Ottostumm W20 - Hot Rolled Steel

This series has its origins in the “Universal Range”, which was introduced for the first time in 1912 by the British company “The Crittall Manufacturing Co. Ltd.”.

The Universal range consisted of three different ranges of hot rolled profiles, identical in geometry and types, but different in their depth, that classified them into large, medium and small.

Depending on the dimensions of the window, the most appropriate series was selected to match the static requirements. These three ranges were able to cover any type of window and opening.

In combination with special T-profiles, used as mullions and transoms, for the first time it was also possible to realize curtain walls of any size.