Harbor Freight Dust Collector to 4" PVC Intake Fitting

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This modification adjusts the approximately 5-inch intake opening on a Harbor Freight single-stage dust collector to accommodate a standard 4-inch PVC hose. It replaces the Y fitting on the impeller intake, securing itself with the original bolt to keep it firmly in place. It's intended to provide a snug fit. To install it successfully, you'll need to carefully work it into position and attempt to keep the adapter's bolt hole aligned with the bolt hole on the impeller intake. Once seated, it won't turn easily.