Nature Passive

The NATURE PASSIVE window represents an effective factor in our effort to save energy. Energy savings and sound insulation were top priorities when designing and developing this window. Alongside the superb insulation qualities the window manages to maintain other superior features, from contemporary design to brilliant finishing touches.


  • innovative installation system boosts energy efficiency, as the façade covers the entire window frame and minimizes heat loss
  • made of wood, the window requires no maintenance nor aluminum protection on the outer face
  • lower part of the window can be modified to best suit the building


  • contemporary design
  • suitable for low-energy buildings
  • easy maintenance and exceptionally long lifespan


  • Wind resistance (EN 12210): Class C2/B3 (single and double casement)
  • Watertightness (EN 12208): Class 8A (single casement) and class 7A (double casement)
  • Air permeability (EN 12207): Class 4 (single and double casement)
Profile dimensions installation depth 68 mm
visible width 100 mm
Instalation options rectangular
arched, semicircular
Opening options fixed
combined (tilt and turn window)
folding walls
tilt-slide walls
lift-slide walls
opening outwards
two-sided handle
Thermal insulation of the window (Uw) Ug = 1,1  
Ug = 1,0  
Ug = 0,7 0,93 W/m²K
Ug = 0,6 0,85 W/m²K
Ug = 0,5