Make-up Filtered Fresh Air Supply centrifugal fans for commercial and industrial use. PennBarry's Muffan replaces foul or contaminated air that is removed by a building's exhaust system. Such make-up air is so essential that it is part of safety and building code requirements for commercial kitchens, chemical laboratories, electrical control rooms and where gas equipment is installed. Proper make-up air provisions should be part of every building plan. Click here for more product information: https://www.pennbarry.com/Catalog%20Home/Commercial/Commercial%20Centrif... 


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