Central dust collection by Filtered Air Systems offer 10,000 to 300,000 CFM and feature Spunbond 99.998% cartridge filter efficiency, Baldor motors and gearbox drive systems, air jet constant filter cleaning package, and VFD motor controls for energy conservation. Available from Dustpipe, the systems meet NFPA fire code requirements and have Factory Mutual & UL approved fire suppression systems and isolation valves and return air abort gates.  They are 100% made in the USA.