Light Industry Dust Collectors - Volume II Filter Technology manufactures a dust collection system that is perfectly suited to small industrial applications: the Volume II dust collector. With 580 ACFM, is powerful enough to keep your transfer or mixing station dust-free. But, it's not over-kill for modest sized operations. The size makes it easy to place just about anywhere, and the cost is competitive. Standard warranty is one year including filters. Model 4-1M Specifications 580 ACFM or less   1.5’ x 1.5’ x 4.5’ housing / hopper and legs optional   4- 6" x 1 meter pleated bags   112 sq. ft. cloth   Bottom removal filters for low head room   Access door for maintenance inspection   Auto or manual mode timer