Slimmest sightlines possible

20 and 28mm sight lines maximise the light entering your property. The natural strength of steel allows for the creation of glass walls of virtually any size. Great for internal partitions.

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Timeless design

Originating in the 1920s, the steel window profile has been revised to accommodate double glazing whilst maintaining all the characteristics of the heritage product.

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Hand fabricated product

The attention given to every T bar, mullion and transom ensures a quality finish that will last a life time. As every item is hand made, no two doors will be the same. Truly unique.

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Versatility in W20

The W20 steel door window profile allows for the manufacturing of steel windows and doors in various types of opening from:

  • Side and top hung casement windows,
  • Side and centre pivoting windows
  • Single and double doors,
  • Sliding and pocket doors,
  • and Large fixed screens.

Although super slim, the steel profile will accommodate single and double glazed units up to 20mm in depth. This results in windows being able to satisfy thermal performance that is required by current building regulations.

If additional thermal performance is needed then you will be interested the W40 Steel Profile and W50 Thermal Break profiles that accommodates larger double glazed and triple glazed units.


Original Steel Doors DesignPlus 010
W20 Original Steel Window and Door Metal Design Plus London

Benefits of the W20 Original steel door window profile

  1. Hot rolled W20 steel sections that allow for super slim sight lines and large openings
  2. Hand crafted product that gives you a unique finished item
  3. Windows and doors are galvanised to prevent rust and increase longevity
  4. The windows can be powder coated to any RAL colour, or to any bare metal finish of your choice
  5. Using slim line double glazed units, steel windows and doors can achieve 1.8W/m2K overall U values.
  6. Steel windows have a huge amount of customisability from handles, hinges, pattern glass and opening configurations
  7. Original Steel Windows and Doors will transform your property and give it a High-End & Luxurious feel
W20 profile sections Design Plus London 1

Window sections, square sections, mullions and sills. All you need for striking doors and windows

W20 Steel Profile Doors Design Plus London

All information regarding the W20 series of Windows and Doors is sourced from the Steel Window Association.