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Nature Optimo XLT

m-sora-nature-optimo-xlt-windowWindow NATURE OPTIMO XLT is a special type of window in Optimo family. It is made of thermally modified spruce and is officially certified as passive window. It is made entirely of wood, it has attractive exotic outlook and outstanding energy efficiency – thermal transmittance of window (Uw ≥ 0,66 W/m2K) whereas its price is real added value. It is world most cost effective PHI certified passive timber window. Window has very nice outlook due to aligned frame and casement which is represented by letters L (»Line«) and X (»Xclusive«), whereas letter T indicates basic material (“Thermally modified spruce”)

made of thermally modified spruce
use of Super Spacer
aligned casement and frame on inner and outer side of the window
thickness of window casement and frame 110 mm
hidden hinges
produced with the newest computer controlled technology bought in 2014

  • high thermal efficiency
  • modern design
  • suitable for low-energy and passive buildings
  • warm feeling
  • excellent water and airtightness
  • very long life time due to very good resistance of thermally modified spruce
Window thermal transmittance
Certificate – Nature Optimo XLT – 0,5
Certificate – Nature Optimo XLT – 0,6
Certificate – Nature Optimo XLT – 0,7
Certificate PHI – Nature Optimo XLT
Use and maintenance instructions

Profile dimensions installation depth 110 mm
visible width 116 mm
Instalation options rectangular
arched, semicircular
Opening options fixed
combined (d and dk)
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 0,79 W/m²K
Ug = 0,6 0,72 W/m²K
Ug = 0,5 0,66 W/m²K