Iso-Max is a totally unique diagonal tube fan, designed to be efficient, powerful and silent. Iso-Max, like Max-Fan, uses the stator-rotor system that enables it to be efficient, air performance and power consumption wise. However, Iso-Max is a particular type of fan, because it is a fan, integrated in a silencer. It has full metal housing and for noise-reduction a special type of foam is added. Its low weight, strong air performance and quietness makes Is..