Unrivalled, fully integrated locking mechanism up to resistance class RC 3. It’s not just the people who surround us, but also the way we furnish our living spaces, and our view of the outside, that help us feel at home in our own four walls. A sense of security is another important component. With the unrivalled I-tec Secure locking mechanism, you can rest assured that your windows offer reliable protection. Instead of the usual locking pins, flaps are used to precisely lock the window sash into the frame. It is virtually impossible to lever out the window. I-tec Secure is integrated into our KF 510 and KF 520 premium-design uPVC-aluminium windows as standard and is available up to resistance class RC 3 on request. Both window systems are available in uPVC and uPVC-aluminium options, and achieve security rating RC 2 N as standard with the optional lockable handle. The flaps also offer considerable advantages when it comes to cleaning the windows. Only a few parts protrude from the sash, while the frame parts are concealed almost entirely, leaving a smooth, easy-to-clean uPVC surface.
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