Photo 1 of PATIKIL 8" to 4" Duct Reducer Connector, Heating Cooling Ventilation Tube Fire-resistant Increaser Adapter Pipe Fitting for Vent System, Grey 200x110 mm ID

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Photo 1 of PATIKIL 8" to 4" Duct Reducer Connector, Heating Cooling Ventilation Tube Fire-resistant Increaser Adapter Pipe Fitting for Vent System, Grey 200x110 mm IDPhoto 2 of PATIKIL 8" to 4" Duct Reducer Connector, Heating Cooling Ventilation Tube Fire-resistant Increaser Adapter Pipe Fitting for Vent System, Grey 200x110 mm ID