Fixed window KF 520

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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) 33 - 46 Security up to RC3, RC2 Locking fully integrated