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Supply only Aluminium Windows | Alunet ACW81 ALUNA Window

The ALUNA Window’s ultra-slim sash offers minimal sightline for maximised views. The system is secure to PAS24:2022 certification and exceeds Part L compliance with a WER rating of A, and a new build requirement of 1.4W/(m2k) is achieved when combined with a highly energy efficient glazing.

The Alunet ALUNA is available with 81mm outer frame as standard, or with an 73mm outer frame which seamlessly couples with our JA48 bifold system – even sharing some components for a perfect match – ideal when a side window with openers next to a bifold is required.

What Makes the ACW81 The Perfect Window For Your Project

The ACW81 is available with our standard (81mm) sash or super-slim sash (73mm) for minimal sightlines. Flush options are also available.

All configurations of the ACW81 window system can be finished in several glazing options to create a style and performance to suit your project.

  • 28-44 glazing options
  • 1.4 U-value with upgraded glazing unit
  • Energy rating A (WER)
  • Side hung / top hung / fixed window options available
  • 73mm profile seamlessly matches the JA48 bifold system
  • PAS 24 compliant
  • 10 year guarantee
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Technical Details

  • Maximum sash sizes of 1500mm x 1500mm (top hung) or 900mm (side hung)
  • Energy Rating of A. Compliant with Part L Requirements
  • PAS24 compliant
  • Down to 1.4 U W/m2K
  • Weather tightness air permeability class 4 (600 Pa) & water tightness Class 8A (side uni) and Class E1500 (top hung)
  • Factory powder coated to marine quality as per Qualicoat regs.
  • Max sash weight – 50kg (top hung) and 40kg (side hung)
  • Engineering grade hardware ofr ultra-smooth opening and closing operation

Are Aluminium Windows Energy Efficient?

Alunet ACW81 Windows deliver polyamide thermal break technology, which enhances the U value and earning an A rating on the Window Energy Rating with a U value as low as 1.4W/m²K. This in turn results in lower energy bills and a more comfortable home environment.

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