Jet JW1007 4-Inch Blastgate
The Jet 4-Inch Blastgate improves your dust collection system. Blast gates are used to control airflow from one machine to another, maximizing system efficiency. These 4-inch OD ABS plastic blast gates have a textured surface and an easy sliding-gate action, and feature a two-degree tapered fit for easy hookup. This Blastgate can be used with metal or plastic ductwork.