WahlcoMetroflex has been in the business of controlling and isolating gas flows for more than 50 years. The company is among leading designers and manufacturers of dampers, related duct systems and expansion joints. WahlcoMetroflex products are in services throughout the world in power plants, refineries, chemical plants, pump and paper mills, steel mills, incinerators and combustion and hot gas systems. The private company employs more than 60 people. WahlcoMetroflex is located in Lewiston, Maine.