The world's first high-tech compact fan with patented bionic Bionic Loop rotor comes from Germany. Developed with the support of the Federal Ministry of Economics and the bionic Dr. Rudolf Bannasch we provide with the Alphacool NB-eLoop series against the currently most advanced fans of the world. The Alphacool NB-eloop was designed especially for Alphacool in an unique blue wing and black frame edition which matches the special Alphacool design perfectly. The unique design of the rotor eliminates the vortices between low and high pressure side of the fan blade tips. The tip vortices are broken up into smaller vortices and distributed evenly. Vortices on the trailing blade edge are reduced to a minimum by vorticity guides. Result of all these features is reduced drag, significantly reducing aerodynamic noise and improving energy efficiency. Dust repelling super-smooth surface, material original Bayer Makrolon?.