THERMAX is a highly insulated aluminium clad window profile.
The wooden part of the window is 88 mm thick, which allows to install very thick glazing units.
Standard THERMAX windows are equipped with a triple glazing unit with the heat transfer coefficient Ug = 0.5 W/m2K.
With this construction we obtain an excellent insulation parameter for the reference window Uw = 0.8 W/m2K.



  • Construction
  • Single-frame, frame and sash cross-section: 88 x 81 mm.
    If technically possible, we can provide any shape and size of the window.
  • Material
  • Four-layer glued scantling, homogeneous or combined in length. Wood types: pine, meranti, oak.
  • Sound insulation
  • Sound reduction for the standard unit Rw = 31 dB.
    Glazing unit with improved sound absorption (option) for Rw = 34-42 dB, depending on a selected glazing unit.
  • Heat permeability
  • The heat transfer coefficient for the window with the test dimensionis Uw = 0.8 W / m2K
  • Glazing
  • Triple-glazing, twin-chamber (4-18Ar-4-18Ar-4), 48mm unit, the heat transfer coefficient Ug = 0.5 W / m2K (EN-PN 674), inter-pane cavity filled with argon.
    Ornamental glass, safe, with sun protection properties – option.
    The maximum thickness of the triple glazed unit is 54mm.
    Warm edge spacer (grey) – standard.
  • Window muntins
  • Vienna (glued wooden + internal aluminium widths: 22, 32, 42mm), inter-pane, construction widths: 60mm or 80mm.
  • Fittings
  • Roto NT locking fittings with micro-ventilation and anti-burglary catch.
    Wrong handle position blockade – option.
    Anti-burglary fittings – option.
  • How to open
  • R (side hung windows), U (tilt windows), RU (tilt & turn windows).
  • Colour
  • Transparent paints according to Sigma Coatings colour chart.
    Opaque paints according to RAL and NCS colour charts.
    4 coating system, impregnation, primer, interlayer, topcoat.
  • Gaskets
  • Undercut, press-in, with TPE closed profile byDeventer or Primo. Gasket colors matched to the color of woodwork.
    Softline – 2 rebate gasket – option.
  • Aluminium Cladding
  • Aluminum cladding cut 45° Mechanically gripped or welded.
    Colors according to RAL color cart. Cladding supplier Aluron.
  • Handles
  • Hoppe Secustic Atlanta handle in white, silver, olive.
    Key-lockable handle in colors as above – option.
    Handle with a button in colors as above – option.
  • Warranty
  • Uni Windows Ltd. offers a 10-year warranty on labour and materials used.

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