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Origin Doors

Casement Windows

An industry-unique stylish twin flush casement. Achieved through combining traditional design, advanced manufacturing and versatile premium grade aluminium, the Origin Casement Window offers high levels of security and thermal efficiency while complementing any type of build.

  • Industry leading 20 year guarantee
  • Metallic or colour coordinated handles
  • Finger safe hinges
  • Stylish flush casement
  • Thermally efficient
  • Ultra slim lightweight durable aluminium frames
  • Advanced weather tight seals
  • High security locking mechanisms
  • Durable powder coating
A close up of a casement window

The Origin Casement Window is available as fixed, with top or side openers and dummy sashes (meaning that the sash doesn't open, but it will match the style and sightlines of the openers).


A close up of a casement window from the handle side

Designed with safety in mind, all side hung windows use hinges which satisfy fire exit regulations (subject to sash size). 


An external view of Origin's casement windows looking into a lounge
An external view of Origin's casement windows looking into a lounge

Our flexible manufacturing techniques and clean and simple aesthetics mean there's no compromise between getting the look you want and strength and security. The casement window can be made up to 1000mm wide x 1800mm tall on side hung windows and up to 1500mm x 1500mm on top hung windows, and even coupled together for larger apertures.


  • Find out about other
    Window Types

    The Origin Window is completely bespoke to the customer's specification and will be manufactured to the exact sizes provided. Our window is a casement system encompassing fixed or sashed casement configurations, bays and gables.

  • A close up of a bay window Bay Windows
  • A close up of a gable window Gables