The Max Fan is an inline mixed flow fan capable of medium to high static pressure. Aerodynamically optimized airflow, quiet operation, and extremely high efficiency. The High Output Max Fan includes a 3 speed switch • High - 940CFM • Med - 850CFM • Low - 750CFM Max-Fan- Save Energy • Extremely energy efficient • Lower lifetime cost • Cost of energy is 70-90% of life time cost Max-Fan- Saves Space • Small airtight housing • Easy installation • Lower transportation cost Max-Fan is Quiet • Very high aerodynamic efficiency • Optimized mixed flow is quieter than other fans of the same size