Smart Systems

Sheerline Prestige Tilt and Turn


Alitherm 800 Flush Sash


Providing a ‘French mullion’ option for contemporary properties, the high-quality Alitherm 800 Flush Casement window delivers outstanding aesthetics and thermal performance. Delivering an ‘A’ window energy rating and a U-value of just 1.3W/m²K (dependant on the sealed unit used), Alitherm 800 windows are suitable for a wide range of applications, including both residential and light commercial new build and refurbishment projects.
The high-performance Alitherm 800 system offers a range of options, including side-hung, top-hung and the completely new French casement variants, as well as a number of outer frame, sash and bead options.

In common with every profile in the Alitherm range, the Alitherm 800 window system incorporates Smart’s innovative polyamide thermal break technology, which creates a barrier between the cold air outside and warm air inside. This technology significantly reduces thermal transmittance and enhances the overall U Value of the product. Alitherm 800 is available in a choice of standard and non-standard colours, with single and dual colour options including Smart’s own Naturals, Sensations, Alchemy and Cotswold colour ranges



All general light use applications including light commercial 



  • Achievable uValue                       1.3u
  • Achievable WER                           A
  • BSW Standard Frame Depth     70mm


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