The JAPAN window is very similar to the NATURE + window. The only difference is the glass pane, i.e. a low-energy triple-layer pane. This window boasts extremely high sound and thermal insulation levels and also allows a blind to be installed between the panes.

When considering the purchase if these windows, keep in mind the following important factors:

  • window is suitable for low-energy buildings
  • excellent sound (Rw=46dB) and thermal insulation (Uw=0,68W/m2K)
  • inter-pane blind installation option
  • easy maintenance
  • exceptionally long service life
Profile dimensions installation depth 138 mm
visible width 136 mm
Instalation options rectangular
oblique -
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 0,71 W/m²K
Ug = 0,6
Ug = 0,5 0,62 W/m²K