Range hoods; Roof fans; Turbine ventilators; Ventilating exhaust fans; Ventilating fans for commercial and industrial use; Ventilating fans for industrial purposes; Ventilating, high-velocity portable exhaust fans for commercial and agricultural use; Ventilation fan accessories, namely, grilles; Air cleaning units; Air filtering units; Extractor hoods for kitchens; Air heaters; Ventilating, high-velocity fixed exhaust fans for commercial and agricultural use