High capacity direct drive propeller wall fans designed to deliver large volumes of air at relatively low static pressures. Typical applications include manufacturing and assembly facilities, warehouses, parking garages, sports and agricultural facilities.     Features Capacities up to 17,800 CFM Up to 7/8 inch static pressure Available for either exhaust or supply ventilation except models FQ98, 108, 129 and 1210 for exhaust only Precision balanced aluminum propeller with advanced teardrop blade design for exceptionally low noise and minimum air turbulence Frame and Orifice Constructed of all welded heavy gauge steel with charcoal baked enamel Deep rolled, streamlined orifice for efficient performance Heavy wall steel tube frame for extra strength Designed to operate in any position Motors Totally enclosed continuous duty type with sealed ball bearing Finish Charcoal baked enamel finish is standard on all steel parts Options/Accessories Safety Guards Dampers Coatings Solid State Controllers Wall Collar Package Wall Box Package Weather Hood Disconnect Switch