Elta incorporates an advanced airfoil blade design that is quiet and efficient, according to the manufacturer. Features of the airfoil impeller include pressure-cast aluminum hubs and adjustable-pitch blades. Custom diameters range from 12 to 79"; the design accommodates up to 18 blades; and the impeller can deliver airflows to 200,000 cfm. Applications include ventilation, cooling towers, heat exchangers, process cooling, replacement impellers and bulk drying.

Continental Fan Manufacturing Inc., (716) 842-0670

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