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Spectus Vertical Sliding Sash Windows

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Spectus Vertical Sliding Sash Windows

The Spectus vertical sliding sash window is the market leader throughout Europe and offer traditional windows, without compromise. It has an authentic looking sash window with Ovolo finishing that combines all the benefits of high performing modern materials and functionality with period character and design.

Designed by Spectus Window Systems the PVC-u frames provide optimum strength, superior thermal protection and excellent weathering performance and with the minimum maintenance, will retain their appearance year after year.

Much thought has gone into the vertical sliding window to ensure that the attractive style of a traditional sash window is retained, whilst providing all the benefits that modern technology can provide.

For ease and cost effective fabrication, each sash option is post co-extruded. Thermal properties are enhanced through use of 24mm glazing as standard. Excellent weathering performance is increased with pile seal detail on the sash edges and outer-frame and air flow specification can be achieved through the use of trickle or glazed-in vents to suit particular applications.


  • Outer-frame dimension is 1288mm
  • Low maintenance PVC-u profiles with traditional styling.  
  • Internally glazed with 24mm glazing.
  • Various configurations can be specified to achieve a range of U values.
  • Recommended maximum size for standard configurations is up to 1000mm wide x 3000 high.
  • Accommodates a variety of hardware including balances, pivot bars and locking mechanisms.
  • Tilt open facility to both sashes for ease of cleaning.
  • Optional internal Georgian bars and plant on astragal bars available.
  • Deep bottom rail option if required.
  • Choice of wood-grain effect and colours available.
  • Decorative horns provide a truly period look.

Our sash windows provide an outstanding barrier against heat and noise loss - even in the most extreme weather conditions. Spectus sash windows, really are the smart choice for any home improvement.


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