The below information is based on the Spectus vertical slider and our standard specification*, there are many more options (too many to list!) if you can’t see it below then please ask. We are also able to source other profiles (other than Spectus). Frames are bespoke and we can work to virtually any specification.

*Official quotations supersede anything listed below. Please carefully check your quotation for exact specifications priced.


  • Authentic sculptured profile
  • Mechanically jointed Deep bottom rail option - gives the authenticity of a timber box sash
  • Both sliding sashes can tilt inwards for easy cleaning
  • Pile-sealed sash edges and outer frame
  • PAS 24 upgrade available
  • Full range of colours and woodgrain foil finishes


  • Large and small sash options for equal sightlines
  • Optional Georgian bars, sash horns, weather bars and a deep bottom rail designed specifically to provide that period look
  • Triple glazing available
  • High performance acoustic glazing options available.