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Next-generation controls and variable-frequency drives from Hoffman & Lamson, Gardner Denver Products, optimize the efficiency of new or existing blowers. The controls include SCADA-ready panels, meterless flow control, pre-engineered design packages that reduce electrical installation costs and automated monitoring. Horsepower consumption is low as the blower output decreases while the optimal efficiency remains the same as at full speed. 724/239-1500; www.hoffmanandlamson.com.

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