Scientific Dust Collectors' Low Pressure (LP) Vertical Cartridge Collector is economically designed for low volume and low static pressure (less than 10" SP). The LP employs the patented supersonic nozzle-based cleaning system, a generously sized access door, and filter removal using a spring-loaded handle, NO TOOLS REQUIRED! The LP Series Cartridge collectors are manufactured using 12-gauge steel, which eliminates "oil canning" and is heavier than competitor units. This series of cartridge collectors is available with top and side mounted fans. Hopper discharge alternatives are drawers, 55-gallon drums, rotary air locks, or 5-gallon pail.