All our product materials have been tested by ift (Institute for Window Technology
Rosenheim, Germany) in accordance with the QM 328 certification, which was developed by ift and is currently by far the toughest test regime for Turn-only and Tilt & Turn hardware. The result: SIEGENIA is world-wide the first hardware manufacturer to have been awarded the ift-Q-Certification. This will assure customers of our consistent commitment to the high-quality of our products and also of the integrity of the hardware that has been tested, as this is
embedded in the certification process.