4 Metal On/Off Aluminum Blast Gate for Dust Collector Collection

4 Metal On/Off Aluminum Blast Gate for Dust Collector Collection. 4 inch aluminum blast gate replaces Jet JW1142 and makes your dust collection system work even better. Blast gates are used in dust collection systems to control airflow from one machine to another maximizing system efficiency. This 4 inch outer diameter top-quality blast gate features a cast-aluminum body with steel gate and locking knob. Attaches to a standard 4 inch dust collection hose on both sides of the blast gate. Replaces Jet JW1142 & Big Horn 11436. Features include: Dimensions: Width 4.75 inch x Height 6.75 inch x Depth 2 inch For use with your shop dust collection system Replaces Jet JW1142 Cast-aluminum body with a steel gate Features locking knob