KF 410

The KF 410 is part of our core window and door range. Available in a uPVC-aluminium clad profile, the KF 410 provides sleek aesthetics with its 93mm construction depth. All the while, it delivers the comprehensive performance levels you come to expect with an Internorm system.

These windows have stunning commercial application, compatible with any high-end project you may be overseeing. End users can benefit from a range of optional upgrades, including Internorm’s own high specification innovations.

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

Profile Options

Technical Specifications

Dimension (in mm)

  • Frame construction depth 93
  • View width frame/sash 113
  • View width flying mullion (2 sashes) 133
  • View width transom/mullion (2 sashes) 187
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

Triple Gasket

The Internorm KF 410 is manufactured with triple gasket technology. Comfortably outperforming windows or doors with fewer gaskets, the KF 410 provides the end user with an unrivalled standard of weatherproofing, air resistance and water-tightness.

Integrated Ventilation

The KF 410 is designed with I-tec Ventilation systems around the perimeter of the frame. This allows for an easy, consistent flow of air for the end user, keeping high end apartment buildings and new builds cool, whatever the external temperature.

Profile Variants

The KF 410 can be designed in one of three profile styles. In doing so, you can fully customise your uPVC-aluminium windows to suit the desired commercial build. Internorm’s high-end systems can seamlessly blend with any style of house or apartment.

I-tec Integration

These uPVC-aluminium windows are compatible with both our I-tec Insulation and glazing, as well as the aforementioned ventilation. The glazing and insulation combine to allow the KF 410 to provide a market leading standard of thermal retention.


Robust Secustik handles ensure the KF 410 is as secure as it is thermally efficient. The sleek, square edged design is in-keeping with the aesthetic appeal, while also ensuring that these systems adhere to Secured by Design requirements.

Internorm Handles


The KF 410 uPVC-aluminium system comes with I-tec Glazing. This industry leading glass can also be toughened and laminated further to serve various commercial high-rise applications, as well as other residential purposes.

Internorm Glazing


Internorm’s ever expanding range of coloured finishes are compatible with the KF 410 system. These uPVC-aluminium profiles can be finished in fade resistant, weatherproof hues that complement its versatile aesthetics.

Internorm Colour Range