Fab Frames Ltd
Fab Frames Ltd
Solidor
Casement Windows Casement Windows Casement Windows Casement Windows Casement Windows

Casement Windows

No window system supplier would ever underestimate the importance of casement windows to the UK housing and property market.

Fabframes Defendoor

Optima is a highly versatile and robust casement system that can be customised to suit almost any requirement. With its wide range of components and ancillaries, it can be used to create bays, bow windows, conservatories, and other configurations, making it an incredibly adaptable system. It is equally at home in modern or period properties and can be used in both urban and rural settings.

Designed with both fabrication and installation in mind, Optima is a system that offers exceptional performance, stylish aesthetics, and ease of use. This makes it an ideal choice for installers looking for a reliable and high-performing casement system that can meet the needs of their customers. With its exceptional strength and durability, Optima can withstand the toughest of weather conditions and provide long-lasting performance, making it a great investment for homeowners looking for a quality product that will stand the test of time.

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Perfectly balanced casements

Casement windows are an essential element of any modern home. They offer a practical, functional and visually attractive solution to ventilation and natural light. Yet, the balance between strength and aesthetics is often a challenge for manufacturers. With Optima, however, this balance has been achieved through innovative engineering that provides a slim frame without sacrificing strength.

At the heart of Optima is the central Eurogroove, which adds to the window's security and provides structural rigidity. The extra overlap on the frame protects against weather and also increases the glass to frame ratio, which maximise natural light and enhances the overall appearance of the window. Optima's design includes strategically placed wall thickening, which makes hardware positioning easy and improves screw retention. Additionally, with a 70mm depth outer frame, installing Optima is straightforward and requires less making good. With purpose-made ancillaries available, the basic frame is easily customisable to suit any project. Optima's sleek design, strength and customisability make it an ideal choice for modern homes.


  • Optional Outer Frame Centre Seal
  • Optional Sash Central Seal
  • Sculptured Edge Design
  • Double Chamfered Edge Design
  • Glazing Options up to 44mm Triple Glazed
  • 5 Chamber Sash
  • 6 Chamber Outer Frame
  • Optional RCM Thermal Inserts create up to 6 chamber sash and 8 chamber outer frame
  • 10mm Cover on Weather Seals
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