Photo 1 of PATIKIL 6" to 3.5" Duct Reducer Connector, 2pcs Heating Cooling Ventilation Fire-Resistant Increaser Adapter Pipe Fitting for Vent System, Beige 160x90 mm ID

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Photo 1 of PATIKIL 6" to 3.5" Duct Reducer Connector, 2pcs Heating Cooling Ventilation Fire-Resistant Increaser Adapter Pipe Fitting for Vent System, Beige 160x90 mm IDPhoto 2 of PATIKIL 6" to 3.5" Duct Reducer Connector, 2pcs Heating Cooling Ventilation Fire-Resistant Increaser Adapter Pipe Fitting for Vent System, Beige 160x90 mm ID