KF 320

The KF320 uPVC-aluminium system is a unique, stunning window delivering versatile commercial application. All styles of housing and building can benefit from the sleek, frameless glass design that sets these windows apart from the rest of the Internorm KF range.

With a slim, 74mm construction depth and full customisation, these windows are sure to be eye-catching and visually appealing for the end user whilst delivering the same exemplary standards of thermal retention and security.

  • U-value icon
    Thermal insulation (in W/m²K):
    Uw up to 0.65
  • soundproof windows
    Sound reduction (in dB):
    35 – 45 average
  • secure windows
    Secured by Design & PAS 24
  • concealed window locks

Profile Options

kf 520 flush fitting window
I-Tec Glazing Logo Latest
Secured by Design windows
PAS 24 windows

Technical Specifications

Dimension (in mm)

  • Frame construction depth 74
  • View width frame/sash 97
  • View width flying mullion (2 sashes) 100
  • View width transom/mullion (2 sashes) 154
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

Glass Sash

This Internorm system is manufactured with a square, slimline design that mimics a fixed frame. However, the KF 320 uPVC-aluminium system still opens and is operational as a conventional or tilting window for the end user.

Triple Gaskets

KF 320 uPVC-aluminium windows are manufactured with Internorm’s black triple gaskets as standard. They allow this profile to achieve complete weatherproofing, with the end user never needing to worry about leaking, damp or rust.

Flush Profile

The KF 320 windows are manufactured in Internorm’s Studio profile design, resulting in a fully flush profile. This delivers eye-catching aesthetics in all commercial applications, while working harmoniously with the unique benefits of this profile.

I-tec Glazing

Internorm’s market leading glass is fitted to the KF 320 uPVC-aluminium window as standard. I-tec Glazing is excellent at reducing solar glare, while seamlessly improving thermal transfer, energy efficiency and durability.


With its fully flush profile, the KF 320’s design can be complemented with our range of square edge handles. Available with and without locking capabilities, the KF 320’s handles are durable, robust and long lasting.

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Internorm Handles


A range of decorative and security options are available with the glazing fitted to our KF 320 uPVC-aluminium windows. Whatever the requirements of the commercial project, the glass fitted to these windows will perform fantastically.

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Internorm Glazing


End users and specifiers can select from a range of colours with the KF 320 uPVC-aluminium profile. Our weather resistant, long lasting colour range includes finishes for both modern and traditional housing or apartment projects.

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Internorm Colour Range