Scientific Dust Collectors® newest Supersonic Pulse Jet Low Flow Bottom Removal (SPJ-BL) Collector is economically designed for low-flow applications (less than 5,000CFM) and low static pressure (less than 14" SP). It utilizes the patented supersonic nozzle cleaning system as well as a high-side inlet so that the heavier dust falls out of the air stream. These features allow the collector to operate at higher air-to-cloth ratios, lower pressure drops, and provide longer filter life.