Patented high-tech developed in Germany! With its own developed and patented (((Noiseblocker))) technology, (((Noiseblocker))) introduced a new era in fan construction in the year 2008. The Multiframe S series made by (((Noiseblocker))), which is generally recognised as the reference standard, is the first fan with a vibration-free fan frame and incorporates numerous other improvements, so that it is superior to standard fans in almost all aspects. In conjunction with the unique (((Noiseblocker))) technology, our almost noise-free NB-NanoSLI bearing and the NB-EKAPlus II drive, the NB-Multiframe S series currently represents the best that German engineering expertise has to offer. Quality you can rely on!