S80 - PVC S Series

The perfect solution for saving energy

Thermal insulation Uf
> 0,96 W/(m2K)

Energy-saving innovative windows of the new generation. Alu Inside is a 7-chamber profile system with excellent thermal insulation properties with Uf values of up to 0.76 W / m2.K. Notice on the cross section of the profile that the massive steel reinforcement is missing. This is an innovative solution for the construction of this profile, where the reinforcement of the profile is provided by two aluminum strips. Thanks to this innovative solution, the windows have a high static stability, the formation of thermal bridges is prevented, the narrow frames allow the use of a larger area of glass (more light) and are lighter than windows with classic profiles with steel reinforcement.

  • 7-chamber window system with outstanding thermal insulation properties for Uf values as low as 0.96 W/(m²K)
  • Available with 2 or 3 sealing levels
  • Multiple design options
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  • 7-chamber window system with excellent thermal insulation properties

  • Patented plastic and aluminum construction
  • Three levels of sealing
  • High soundproofing and resistance to crosswinds and rain

  • Passive house certificate according to the ift Rosenheim testing laboratory


  • Suitable for low-energy and passive houses

Construction depth82 mm
Number of chambers7
Surface finishesDecorative foil /AutomotiveFinish / TopAlu
Seal2x seating surfaces 1x center


Thermal permeability of the frame Uf0,90 – 0,76 W/m2.K
Thermal permeability of glass Ug1,1 – 0,5 W/m2.K
Total transfer heat  Uw1,1 – 0,68 W/m2.K
The seven closed air chambers inside the frame profile ensure maximum thermal insulation efficiency, which was previously unthinkable without costly additional measures. The patented combined construction of plastic and aluminum reinforces the profiles so effectively that the steel reinforcements used in conventional profiles can be completely omitted. The removal of these “thermal bridges” significantly increases the insulation performance of these frame profiles.
The window made of Alu Inside profile, which is fitted with heavy triple glazing, has a comparable weight as a window with steel reinforcement, which is fitted with lighter double glaze.


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