Photo 1 of Vent Systems 4" Inch - Male Fit in-line Air Vent Duct Coupler for 4 inch Pipe - Straight Inline Ventilation Pipe - Plastic Ducting Connector for Cooling Heating Ventilation HVAC Systems

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Photo 1 of Vent Systems 4" Inch - Male Fit in-line Air Vent Duct Coupler for 4 inch Pipe - Straight Inline Ventilation Pipe - Plastic Ducting Connector for Cooling Heating Ventilation HVAC SystemsPhoto 2 of Vent Systems 4" Inch - Male Fit in-line Air Vent Duct Coupler for 4 inch Pipe - Straight Inline Ventilation Pipe - Plastic Ducting Connector for Cooling Heating Ventilation HVAC Systems