For more than 40 Years, the performance superiority of Scientific Dust Collectors is not just an idle claim. It is fact based on sound theory, solid engineering practices, and extensive field experience. Combined with our High Side Inlets, Wide Filter Spacing, and Inlet Baffling, we are able to guarantee performance, efficiency, and filter life. ASHRAE Standard 199 Test Lab audited & Certified by Blue Heaven Technologies. If you want the best, please consider SDC. Products offered: Baghouse Dust Collectors, Cartridge Dust Collectors, Bin Vent Dust Collectors, Filter Receiver Dust Collectors, Cyclone Dust Collectors, Downdraft Tables.