back to overview


UPVC/aluminium windows
KF 405

The straight-lined UPVC/aluminium window has a captivating, consistent design, being flush-mounted both inside and outside — in weather-resistant aluminium on the outside, and low-maintenance UPVC on the inside. From the outside, the opening sash is covered by the window frame.


Thermal insulation: Uw to 0,63 W/m²K
Sound protection: 35–43 dB
Security: RC1, RC2
Locking: concealed

Product information


  • Glass sash — no difference in the outside view between fixed and opening parts
  • Frameless glass architecture — windows can be rendered on three sides
  • For modern renovations, the window is also available with a profiled frame look
  • With shortened aluminium facing formwork on request for a structural connection that is thermotechnically optimised

Dimensions in mm

  • Frame construction depth: 93 mm
  • View width, frame/sash: 89 mm
  • View width, flying mullion (with two sashes): 100 mm

Opening versions

  • Fixed
  • Turn and turn/tilt
  • Tilt
  • Lockable doors
  • Doors with threshold


  • Quantity: 3
  • Colour: black



We offer you an ambitious selection of handles — one recommendation is shown here. For information about further designs, please contact your Internorm architectural consultant.

G80 standard handle
Flat rosette

G80 standard handle

G80 standard handle

Dallas handle

Sun and insect protection

The sun and insect protection systems complement the windows, making them one functional unit, and support the design of the house façade.

Venetian blinds: optimal control and deflection of light and heat via adjustable slats, can be combined with insect protection

Attachment roller shutter: mounted completely on the window, can be combined with insect protection

Insect protection: clamped, hinged or sliding frame or drop-down fly screen available, can be combined with sun protection

Venetian blindsAttachment roller shutterInsect protection

Large-scale elements

A door or fixed glazing model is available — up to 8.2 m2 glass area.
Fixed glazing






The UPVC/aluminium windows of the studio design line are available with a white inside look. A selection of the colours available for the outer aluminium shell is shown here. Please discuss your individual colour requirements with your Internorm architectural consultant.

Outside colour






Product data sheet for download


To download further technical data, please log into
the [1st] WINDOW PORTAL.

If you do not have access yet, please register here.