Air Pollution Control Exhaust Fan Scrubbers May 20, 2016 Industrial Exhaust Fans: Dry Scrubbing (FGD) System AirPro built two exhaust fans for a Dry Flue Gas Desulfurization (SDR) system installed at a US copper mine. All parts in contact with the air stream were constructed with 316 Stainless Steel including all fan accessories. Continue reading →