Ventilating exhaust fans; Fans for air conditioning apparatus; Industrial electric oscillating fans for automatic cleaning of ceilings, light fixtures, ducts and other overhead structures exposed to fibrous airborne contaminants; Rooftop grease containment system comprising an exhaust fan, grease deflector, and filter for trapping grease vented from rooftop exhaust fans for cooking areas within the building; Ventilating fans for industrial purposes; Electric fans; Ventilating fans for commerc...