Roll this large air filter anywhere around the shop where it-inch needed most. roll it out of the way when not in use. features include a 12-Inch air outlet two speed motor and easy open door for filter cleaning. air movement is 1500 cfm and 2000 cfm. pre-filter: 3 microns. primary filter: 0.3 microns. overall size is 30-1/2-Inchl x 25-3/4-Inch w x 29-3/8-Inch h. approximate shipping weight 150 lbs. • 1-3/4 hip motor 110 volt single phase • pre-filter dimensions: 25-Inch l x 25-Inch h x 7/8-Inch d • primary filter dimensions: 24-Inch l x 24-Inch h x 11-3/4-Inch d • filtration rating: 0.3 micron.