KF 310

The KF 310 is part of our uPVC-aluminium window and door range here at Internorm. The KF 310 has fantastic commercial application, delivering sleek, versatile aesthetics while performing to a leading standard.

Coming with a multi chambered frame and discrete, secure hardware, the KF 310 is a leading system among our uPVC and uPVC-aluminium systems here at Internorm.

  • U-value icon
    Thermal insulation (in W/m²K):
    Uw up to 0.62
  • soundproof windows
    Sound reduction (in dB):
    34 - 45
  • secure windows
    Secured by Design & PAS 24
  • concealed window locks

Profile Options

Technical Specifications


  • Frame construction depth 74
  • View width frame/sash 107
  • View width flying mullion (2 sashes) 119
  • View width transom/mullion (2 sashes) 170
Opening versions

  • Fixed
  • Turn and turn/tilt
  • Tilt
  • Sliding window
  • Lockable doors
  • Sliding doors
  • Doors with threshold
  • Outward opening doors

  • Quantity 3
  • Colour Black

Profile Features

Opening Configurations

The KF 310 system is as versatile as it is impressive. The uPVC-aluminium profiles can be applied to traditional casement sashes, fixed frames and even tilt and turn variants. All the while, it can also be used on both swing and sliding doors for commercial use.

Six Internal Chambers

As many as six internal chambers complement our Internorm I-tec Glazing in the KF 310 model. These chambers prevent the ingress of cold external winds and, in turn, lower the achievable U-values of our windows to market leading levels way above average.

Profile Variants

The KF 310 is compatible with Internorm’s three different glazing bead and framework variants. As a result, these windows effortless adhere to all commercial needs, whether that requires a flush fitting window or something more traditionally sculpted.

Unique Triple Gaskets

Internorm products stand above and beyond with triple gaskets as standard. It allows the KF 310 to provide commercial projects with an unparalleled standard of water-tightness and weatherproofing. It goes above and beyond a subpar single gasket variant.

Extra Features


The KF 310 uPVC-aluminium windows are available with a wide range of different hardware options. As a result, it is the perfect, versatile window for all kinds of commercial projects, whatever their specification.

Internorm Handles


A plethora of glazing options and upgrades allow the KF 310 uPVC-aluminium window to serve both residential and commercial application seamlessly. They are compatible with Internorm’s I-tec Glazing units.

Internorm Glazing


Supply for your commercial project through Internorm, and we can customise your uPVC-aluminium windows in an array of colours. Our finishes are brighter, longer lasting and better than our competitors.

Internorm Colour Range
Internorm BIM Library

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