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UPVC windows
KF 410

The subtly profiled UPVC window meets the highest demands for heat protection and is therefore our "best in class" window. It is passive house-certified as standard. The design of the frame profile with narrow radii offers a soft look that emphasises the surface.

Thermal insulation:Uw up to 0,62 W/m²K
Sound protection: 34–45 dB
Security: RC1, RC2

Product information



  • High thermal insulation thermal foam (HCFC-, HFC- and FC-free)
  • Subtly profiled look with narrow radii
  • Can be coupled with KV 440 and combined with timber-aluminium windows


Dimensions in mm

  • Frame construction depth: 90 mm
  • View width, frame/sash: 113 mm
  • View width, flying mullion (with two sashes): 133 mm
  • View width, transom (with two sashes): 187 mm
I-tec Ventilation
  • I-tec Ventilation optional
  • IV 40 with 93% heat recovery

Opening versions

  • Fixed
  • Turn and turn/tilt
  • Tilt
  • Sliding windows
  • Lockable doors
  • Sliding doors
  • Doors with threshold
  • Outward opening doors


  • Quantity: 3
  • Colour: light grey/black

Further design styles

KF 410

KF 410


Product data sheet for download


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Product combinations