The DELTA 50-750 Dust Collector 2 Micron Canister Filter helps capture fine dust particles for cleaner air and effective dust collection. This replacement canister filter allows airflow to pass through its filter media while trapping fine particles produced during woodworking and similar tasks. Its 2-micron filtration helps collect smaller particles that may otherwise remain airborne.... https://www.wholetoolbox.com/delta-50-750-dust-collector-2-micron-canister-filter/50-750.html