KF 520
Highest security and flush design, indistinguishable from fixed glazing
Thermal Insulation
Uw up to 0,63 (in W/m²K)
Sound reduction (in dB)
up to 33 - 46
Security
up to RC3
Locking
Fully integrated
The KF 520 is a masterpiece in design and technology: the flush uPVC-aluminium designer window impresses with its innovative glass sash, not visible from the outside and indistinguishable from fixed glazing. The particularly slim frame ensures maximum light transmission. Incorporating the unique I-tec Secure security locking system, it offers the highest burglary protection and easy cleaning. This window features concealed hardware and is ideal for modern buildings and sophisticated architecture. Can be perfectly combined with the HF 520 timber-aluminium designer window, which allows you to choose a uPVC interior for wet and bathrooms, and an internal timber finish for living areas, while maintaining a uniform appearance on the outside.
I-tec Glazing
Internorm's I-tec Glazing permanently bonds the glass to the window sash around its entire perimeter, delivering exceptional structural stability, enhanced security against forced entry, improved thermal and acoustic insulation, increased durability, and a slimmer, more elegant window design.
