Photo 1 of Vent Systems 6" inch to 4" inch Duct Reducer Adapter Connector Fitting Pipe Increaser Reducer Cone for HVAC Ventilation Systems, ABS Plastic PVC Pipe 150 to 100 mm

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Photo 1 of Vent Systems 6" inch to 4" inch Duct Reducer Adapter Connector Fitting Pipe Increaser Reducer Cone for HVAC Ventilation Systems, ABS Plastic PVC Pipe 150 to 100 mmPhoto 2 of Vent Systems 6" inch to 4" inch Duct Reducer Adapter Connector Fitting Pipe Increaser Reducer Cone for HVAC Ventilation Systems, ABS Plastic PVC Pipe 150 to 100 mm