Improve your dust collectors efficiency by converting to a two-stage unit with this cyclone lid and a standard 5 gallon bucket. This cyclone lid and bucket collect larger and heavier debris before they can reach and clog the filter. Lid features a foam gasket for superior seal. The elbow fitting under the inlet side induces a cyclonic air flow inside the bucket for increased efficiency. Lid accepts 2-1/2” ID hose and fits 5 gallon buckets with maximum diameter of 11-3/4".