Spectus Casement Window
A design classic in every sense.
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/07/Spectus-Casement-Window-System-600x600.png)
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:
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/07/Specus-Bevelled-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/07/Specus-Ovolo-150x150.jpg)
Description
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.
Colour options
Stock & Fast Track Colour Range
↓ Click on swatch colour to change corner sample image
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-AnthracteGrey_on_WhiteBase.jpg)
Foil Colour: Anthracite Grey on White (PVC-U) Base Colour: White Base Stock Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-Grey-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-AnthracteGrey_on_GreyBase.jpg)
Foil Colour: Anthracite Grey on Anthracite Grey Base Colour: Grey Stock Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-Rosewood_on_WhiteBase.jpg)
Foil Colour: Rosewood on White (PVC-U) Base Colour: White Stock Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-Brown-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-Rosewood_on_BrownBase.jpg)
Foil Colour: Rosewood on Rosewood Base Colour: Brown Stock Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-BlackBrown_on_WhiteBase.jpg)
Foil Colour: Black Brown on White (PVC-U) Base Colour: White Stock Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-Brown-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-BlackBrown_on_BrownBase.jpg)
Foil Colour: Black Brown on Black Brown Base Colour: Brown Stock Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-LightOak_on_WhiteBase.jpg)
Foil Colour: Light Oak on White (PVC-U) Base Colour: White Stock Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-Tan-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-LightOak_on_TanBase.jpg)
Foil Colour: Light Oak on Light Oak Base Colour: Tan Stock Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-Cream_on_WhiteBase.jpg)
Foil Colour: Cream on White (PVC-U) Base Colour: White Stock Colour Premium Plus
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-Cream-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-Cream_on_CreamBase.jpg)
Foil Colour: Cream on Cream Base Colour: Cream Stock Colour Premium Plus
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-WhiteWoodgrain_on_WhiteBase.jpg)
Foil Colour: White Woodgrain on White Woodgrain Base Colour: White Stock Colour Premium Plus
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-AnthracteGreySmooth_on_WhiteBase.jpg)
Foil Colour: Anthracite Grey Smooth on White (PVC-U) Base Colour: White Fast Track Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-Grey-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-AnthracteGreySmooth_on_GreyBase.jpg)
Foil Colour: Anthracite Grey Smooth on Anthracite Grey Smooth Base Colour: Grey Fast Track Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-ChartwellGreen_on_WhiteBase.jpg)
Foil Colour: Chartwell Green on White (PVC-U) Base Colour: White Fast Track Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-AgateGrey_on_WhiteBase.jpg)
Foil Colour: Agate Grey on White (PVC-U) Base Colour: White Fast Track Colour Premium
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Base-White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-PebbleGrey_on_WhiteBase.jpg)
Foil Colour: Pebble Grey on White (PVC-U) Base Colour: White Fast Track Colour Premium Plus
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/OptimaS-White-PVCU-WhiteBase.jpg)
Made to Order Colour Range
Made to Order Colours are available with white PVC-U internal faces, or foiled on both sides on a complementary base colour for better looking installations.
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Black-Ulti-Matt-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Silver-D-Smooth-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Hazy-Grey-Finesse-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Kensington-Grey-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Buckingham-Grey-1-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Basalt-Grey-Smooth-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Slate-Grey-Finesse-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Slate-Grey-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Anthracite-Grey-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Anthracite-Grey-Smooth-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Cream-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Claystone-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Pebble-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Windsor-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Sage-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Agate-Grey-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Chartwell-Green-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Irish-Oak-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Honey-Oak-Super-Matt-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Light-Oak-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Pyrite-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/AnTEAK-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Rosewood-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Swamp-Oak-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Black-Brown-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Flemish-Gold-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/White-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Dark-Red-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Steel-Blue-150x150.jpg)
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Dark-Green-150x150.jpg)
Base Colour Complementary Range
↓ Click on colour base name to view complementary foils
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Black-Ulti-Matt-150x150.jpg)
Black Ulti-Matt*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Silver-D-Smooth-150x150.jpg)
Silver D Smooth*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Hazy-Grey-Finesse-150x150.jpg)
Hazy Grey Finesse
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Kensington-Grey-150x150.jpg)
Kensington Grey
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Buckingham-Grey-1-150x150.jpg)
Buckingham Grey
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Basalt-Grey-Smooth-150x150.jpg)
Basalt Grey Smooth
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Slate-Grey-Finesse-150x150.jpg)
Slate Grey Finesse
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Slate-Grey-150x150.jpg)
Slate Grey
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Anthracite-Grey-150x150.jpg)
Anthracite Grey
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Anthracite-Grey-Smooth-150x150.jpg)
Anthracite Grey Smooth
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Cream-150x150.jpg)
Cream
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Claystone-150x150.jpg)
Claystone*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Pebble-150x150.jpg)
Pebble Grey*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Windsor-150x150.jpg)
Windsor
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Sage-150x150.jpg)
Sage*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Agate-Grey-150x150.jpg)
Agate Grey
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Chartwell-Green-150x150.jpg)
Chartwell Green
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Irish-Oak-150x150.jpg)
Irish Oak*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Honey-Oak-Super-Matt-150x150.jpg)
Honey Oak Super-Matt*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Light-Oak-150x150.jpg)
Light Oak
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Pyrite-150x150.jpg)
Pyrite*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/AnTEAK-150x150.jpg)
AnTeak*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Rosewood-150x150.jpg)
Swamp Oak*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Swamp-Oak-150x150.jpg)
Rosewood
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Black-Brown-150x150.jpg)
Black Brown
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Flemish-Gold-150x150.jpg)
Flemish Gold Smooth*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/White-150x150.jpg)
White*
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Dark-Red-150x150.jpg)
Dark Red
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Steel-Blue-150x150.jpg)
Steel Blue
![](https://epwinwindowsystems.co.uk/wp-content/uploads/2022/01/Dark-Green-150x150.jpg)
Dark Green
For details on our full range of colours, please get in touch with one of our team. All colours and imagery shown are for illustrative purposes only. Please refer to an Epwin Window Systems colour swatch for a more accurate representation of finishes. Not all products are available on all substrates. Please refer to our PVC-U Systems colour guide. Colours and substrates are subject to change. RAL numbers are quoted to the nearest match.