Photo 1 of 4-Inch Oval to 3-Inch Round Duct for Panasonic Exhaust Fan Adapter, Vent Reducer Connector for Bathroom Ventilation, Easy Installation (Black)

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Photo 1 of 4-Inch Oval to 3-Inch Round Duct for Panasonic Exhaust Fan Adapter, Vent Reducer Connector for Bathroom Ventilation, Easy Installation (Black)Photo 2 of 4-Inch Oval to 3-Inch Round Duct for Panasonic Exhaust Fan Adapter, Vent Reducer Connector for Bathroom Ventilation, Easy Installation (Black)Photo 3 of 4-Inch Oval to 3-Inch Round Duct for Panasonic Exhaust Fan Adapter, Vent Reducer Connector for Bathroom Ventilation, Easy Installation (Black)