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The Casement Window

It not only looks good, it’s security conscious as well by complying with BS7950 (enhanced security) in addition to achieving BBA and BSI accreditations.

A comprehensive range of ancillaries allows varying product types to be manufactured, including Mock Horn (from Kits) and French casements, with an infinite variety of accessories and specifications to enable enhanced thermal and acoustic performance, choice of colour, or to suit specific regulation or standards.

Achieving better SAP calculations under the Code for Sustainable Homes initiative, plus BFRC C, B or A rating for enhanced energy efficiency and a BRE expected lifecycle in excess of 35 years, the Duraflex system has the ability to meet your needs

Unrivalled Quality & Manufacturing

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High Security

Security is not compromised either; the 70mm suite can be fitted with a variety of hardware and locking options.Security is not compromised either; the 70mm suite can be fitted with a variety of hardware and locking options.

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Endless Options

Expanding the choice. Our comprehensive range of products are available in a range of finishes.

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Energy Efficient

All casements can be supplied to achieve the necessary WER (Window Energy Rating) A, B and C products.


All products detailed are available in 70mm front-to-back sizes. Our systems are designed to exceed all current standards, including thermal performance and enhanced security.

  • Available in the 70mm integrated systems
  • Bevelled and fully featured options
  • Full range of bead designs available in 28mm glazing options
  • High performance Q-lon
  • Comprehensive range of ancillary sections available
  • Full range of aluminium and steel reinforcements, steel also available in cut to size lengths

Download a brochure below

Casement Windows Featured Brochure

Casement Windows Bevelled Brochure

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