Spectus Casement Window

A design classic in every sense.

Product Features

  • U-values as low as 0.8W/m²K
  • WER rating of band A++
  • Double or triple glazing options up to 44mm
  • 5-chamber sash & outer frame
  • Ovolo and Bevelled options
  • Available in a range of 30 colours including dual options
  • 85, 110, 150, 180, 225mm cill options
  • Compatible with Tilt & Turn Window
  • Secured by Design approved
  • PAS 24 as standard

Available profile shape:

Bevelled Ovolo


The Spectus Casement Window is simple to fabricate and straightforward to install, with its graceful curves and the product flexibility you’d expect. The fully integrated, award-winning system offers the best of everything and is available in Ovolo and bevelled design options.

The Spectus Casement Window system is suitable for almost any size or layout of casement window and includes all the components for bay & bow windows and conservatories too.

It offers superior energy and security performance and is available in 24mm, 28mm, 36mm, 40mm and 44mm glazing widths which cover double and triple glazing. Epwin Window Systems’ range of recycled thermal inserts can also be used with the Spectus system, offering further thermal performance benefits.

Product Case Study

Friday 1st July

Spectus windows and doors specified for an exclusive ne...

Tuesday 14th June

Optima windows and doors specified for townhouse develo...

Thursday 24th February

Profile 22 products fitted in Harrogate new build devel...


Epwin Showroom Tour