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Vent Systems 8" inch to 6" inch Duct Reducer Adapter Connector Fitting Pipe Increaser Reducer Cone for HVAC Ventilation Systems, ABS Plastic PVC Pipe 200 to 150 mm - - Amazon.com
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Charlotte Pipe 6-in x 6-in Dia Schedule 40 Coupling in the PVC DWV Pipe & Fittings department at Lowes.com
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PVC Pipe Fitting Coupling Schedule 40 White 6-inch Socket 2pcs Fittings & Adapters gnv4all Business & Industrial
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