Alitherm 47
Our Aluminium range of windows and doors is the ideal replacement for almost any existing domestic window type.

A various range of finishes and designs are possible, making this the most customisable window available. The system passes all relevant quality and performance tests. Our Windows are also thermally efficient with a thermal break and fully Document L compliant.
Whether you are looking to replace your drafty old Crittall windows or simply need to upgrade to a window that is more secure and efficient, the Alitherm 47 system is for you.
The Alitherm 47 window can easily achieve a WER B rating with a thermally efficient - high solar gain glass.
Applications
- Fixed lights
- Open out windows
- Internally or externally beaded windows
Materials
- Aluminium: ALMgSi 0.5 Type 6060/6063 T5 in condition F22 (according to NBN P21-001 and DIN 1725).
- Sealings: E.P.D.M according to DIN 7863, TV110 NFP 85301, ISO3994. Tested and approved according to an artificial ageing test of “Plexi glass” combined with vulcanised rubber.
- Co-extruded profiles: according to DIN 7863, TV110 NFP 85301, ISO 3994, Tested and approved according to an artificial ageing test of “Plexi glass” combined with vulcanised rubber.
- Thermal break: polyamide strips PA 6.6.25% reinforced with glass fibre.
Finishing
- Electrostatic powder coating: according to the guidelines of APA-Qualicoat in most of the current RAL-colours.
- Anodisation: in satin or bronze colours with E.E.W.A./EURAS-Qualanod quality label.
Details
- Equal leg outer frame
- Odd leg outer frame
- Externally beaded cockspur locking vent frame
- Internally beaded locking vent frame
- Transom/mullion with screw ports
- Transom/mullion without screw ports, for use with mechanical cleat
- Flush coupling adapter
- Head extension for trickle ventilator
- 24mm, 28mm and 32mm square external glazing beads
- 24mm square internal glazing bead
* A WER B Rating is available only if the correct glass, frame and gasket is used. This needs to be specified upon quote/order. Our standard spec windows are WER C rated.





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