Clement Windows' EB20 Range

The 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.

Clement EB20 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: first rate 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 20mm insulated glass units mean that the largest possible glazed area is provided, thereby optimising solar gain and saving energy through reduced use of artificial lighting, making this one of our most efficient windows. A most versatile and popular product, EB20 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
  • Multi point or single point locking
  • Low maintenance
  • Various glazing options