Internorm uPVC/Aluminium Windows

KF 520

KF 520 combines innovative design with technical know-how. The window sash is not visible from outside due to its glass appearance and can optically not be distinguished from fixed glazing. This sash also contains the revolutionary locking I-tec Secure which renders levering of the window impossible – unrivalled in the branch. Integrated flaps press on all sides into the frame interior when locking and thus ensure maximum burglary protection.

Thermal insulation (in W/m²K)
Uw up to 0.63

Sound reduction (in dB)
RC2, RC3 (Secured by Design & PAS 24)

Security
Concealed

Locking
Fully integrated

Technical Specification

Dimension (in mm)

Frame construction depth

90/93

View width frame/sash

75

View width flying mullion (2 sashes)

100

Opening Versions

Fixed

Turn and turn/tilt

Tilt

Sliding window

Lockable doors

Sliding doors

Doors with threshold

Outward opening doors

Gaskets

Quantity

3

Colour

Black