AER introduces two new modular dust control models. The Power Booth Module PBM-4 has four vertically oriented cartridge filters rated at 98% efficiency, and the PBM-6 has six cartridge filters, also rated at 98% efficiency. The Power Booths were designed for control of heavy concentrations of dry contaminants. The PBM Series dust collectors meet or exceed OSHA requirements and include pulse jet filter cleaning. Dust from the filters drops into removable drawers, and a Magnehelic gauge, standard on all units, indicates when the filters need to be cleaned or replaced.