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Technical Data

Thermal Insulation

Thermal insulation with standard triple glazing and highly thermally insulating edge seal (Ug = 0.5 W/m2K) Uw = 0.69 W/m2K
Best thermal insulation Uw up to 0.62 W/m2K (with corresponding glazing)

Sound Insulation

Soundproofing up to 46 dB

System Description

  • 85 mm construction depth
  • Classic, square-edged and straight-lined exterior and interior design
  • Highly thermally insulating thermal foam (HCFC, HCF and FC free)
  • FIX-O-ROUND technology
  • Fully concealed hardware
  • Visible or concealed drainage
  • Standard security
  • Triple gasket system
  • Designer locking parts
  • Resistance class up to RC2
  • In the standard version suitable for passive houses acc. to TU Graz

Internorm HF 310 TIMBER/ALUMINIUM - Window Profile


 iTec glazing logo


Ingenious Glazing System

Glass panes glued to the timber frame ensure good structural stability and high torsion resistance.

Fully Concealed Hardware

As standard no visible hardware parts – for better appearance, easier to clean and above all for better impermeability from the inside. 

Modern Design

The timber/aluminium window HF 310 stands out through its modern, square-edged exterior design.