Clement EB20 Range of Steel Windows

With a wealth of experience in providing fenestration for landmark historical buildings, we understand the importance of finding the perfect windows to retain a home’s period character, whatever the architectural style.

EB20 steel windows have been created with this in mind. For projects where a traditional steel window appearance is required, the EB20 range is designed to replicate the appearance of original or existing windows while simultaneously providing all the advantages of 21st century technology: improved thermal and weather performance, low maintenance and high security.

EB20 windows are manufactured from recycled steel and all the windows in this range have exceptionally slim frames. The use of krypton filled glass units means this product achieves a ‘B’ Window Energy Rating, thereby complying with the latest energy ratings for replacement windows. The slimmer insulated glass unit (IGU) used increases the ‘shadow line’. This enables the replica window to be close in appearance to the original putty glazed windows which some projects demand.

A most versatile and popular product, EB20 steel windows are appropriate for both refurbishment and new build projects. The 20mm glass offers an increased ‘shadow line’ which is essential to many heritage projects.


  • Exceptionally slim 20mm insulated glass units
  • Part L compliant
  • Window Energy Rating of “B” available if greater thermal performance required
  • Available with multi point locking to PAS 24 or traditional single point locking
  • Low maintenance
  • Various glazing options
  • Produced from 98% recycled steel source material

Technical Information



Clement Steel Windows Glazing


We offer five different styles of glazing, from clear glass, to genuine lead in an arrangement to match the pattern of your original leaded lights, to the G+ and Fenestra joint systems which are unique to Clement. All of these options have superb features which faithfully replicate those of original steel windows.

Clement Steel Windows Colours


Our steel windows are hot dip galvanized and available in a choice of highly durable Akzo Nobel powder paint colours. Clement Windows provide an average paint coating in excess of 100 microns on flat surfaces – the industry standard calls for 60/70 microns. Order from a wide range of RAL colours to match your scheme or choose different colours for the inside and outside of your windows.

Clement Windows Accessories


Browse a select range of accessories which perfectly complement our stunning steel windows, doors and screens. Carefully crafted in a number of different styles and available in a choice of colours and finishes, our range of handles and other fittings are made from the finest quality materials and manufactured with the latest technology in mind.