KF 410

The KF 410 is a contemporary, versatile uPVC profile compatible as both a window and a door. With a square edged design that complements our Home Pure style, this system is visually appealing for all end users and is fantastic for a multitude of commercial projects.

As with our uPVC-aluminium clad KF 410 variant, the uPVC KF 410 comes with a range of I-tec innovations, and performs to an exemplary standard. Compared with the standard uPVC window on the market, Internorm’s stands head and shoulders above the competition.

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

Profile Options

Technical Specifications

Dimension (in mm)

  • Frame construction depth 90
  • 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 Windows
  • Lockable Doors
  • Sliding Doors
  • Doors with Threshold
  • Outward opening doors

  • Quantity 3
  • Colour Light Grey

Profile Features

Insulating Granulate

More thermally retentive than conventional window chambers, our I-tec insulating granulate helps the KF 410 achieve excellently low U-values. The gapless filling prevents the ingress of cold external air, whatever the application of the window.

Versatile Application

The KF 410 profile can be applied to a wide range of different applications in the commercial or residential sectors. They can be manufactured into fixed frame windows, as well as tilt and turn windows, sliding windows and a range of doors.

Triple Gaskets

Internorm uPVC windows and doors are fitted with unique triple gasket technology as standard. In doing so, they achieve total weatherproofing, both now and years after the commercial project has been completed

Integrated Ventilation

The KF 410 is the only uPVC window we offer for commercial application that has integrated I-tec Ventilation systems. Perfect for multi storey buildings where windows cannot be fully opened, they allow for seamless air flow all year round.


Sleek, square edge handles are the standard offering with the KF 410 uPVC window. They are discreet in design, easy to operate and aid the overall security standards on offer. They are a great accessory for the KF 410 profile.

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Internorm Handles


Modern I-tec Glazing is fitted to the KF 410 uPVC system, whatever commercial application they are serving. Available with insulated and toughening measures as extra, our glazing is available bespoke for whatever project you are running.

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Internorm Glazing


An array of different colour possibilities are available with the KF 410 uPVC system. Cater to all commercial projects in any sector, thanks to superb versatility of this profile. All our colour finishes are weatherproof and long lasting.

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Internorm Colour Range