Photo 1 of PATIKIL 4" to 3" Eccentric Duct Reducer, 1Pcs Galvanized Iron Ducting Connector Round Air Duct Adapter Pipe Fitting for Vent Inline Ventilation Bathroom Kitchen

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Photo 1 of PATIKIL 4" to 3" Eccentric Duct Reducer, 1Pcs Galvanized Iron Ducting Connector Round Air Duct Adapter Pipe Fitting for Vent Inline Ventilation Bathroom Kitchen