the fan arrived quickly. unpacked and --- lacrimation whether the pungent plastic odor. almost as blown board. Now I'll try to let evaporate the fan 4 weeks in the sun. I assumed it was a "real" silent fan with ball bearing Instead, however, plain bearing, after all metal bearings. Now angeschlossen- for sucking the warm air. at 60% speed to low leistung- about too loudly (mounted upside down) as well as supply I think the "paddle wheels" form is not well thought out .. beigeliefrten the rubber plug are too small for MPress holes in Enermax tower.