The Porta-Vac 23 air duct cleaning vacuum can be transported to a jobsite and wheeled to a convenient exterior location. According to the manufacturer, the machine uses shorter, more efficient hose runs and an external filter bag for near truck-mount performance. The machine has more power than an electric unit and better mobility than trailer- and truck-mounted machines, claims the company. It provides a static pressure of 16 inches wc. Features include a 23-hp Kohler Command OHV CARB-compliant gas engine; a 6.6-gallon fuel tank; heat exhaust safety shield; a lightweight, durable steel frame; and heavy-duty 10-inch wheels. The vacuum has pneumatic wheels; two are stationary and the other two swivel with locks. Supplied in the filtration system is a 6- by 4-foot diameter Dacron® bag. A digital hour meter, tachometer, and service indicator are optional.

Wm. W. Meyer & Sons Inc., 1700 Franklin Blvd., Libertyville, IL 60048; 847-918-0111;

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