Boost the performance of your shop vacuum-powered dust collection system with the WoodRiver Dust Connection Funnel Reducer. Its tapered design smoothly transitions from 4" hose to 2-1/4" hose, making it easy to connect a wide range of fittings. Built for a snug, reliable fit, this reducer helps maintain strong suction and efficient dust control. Features: Ideal fitting to use to connect 4" hose to 2-1/4" hose in shop vacuum powered systems Tapered reducer to “funnel" debris into the smaller shop vacuum system Inlet and outlet ports are 2" long to provide room for secure connection Durable, abrasion resistant construction Specifications: Size:Reducer fitting has 4" OD port on one side and 2-1/4" OD port on other Construction: ABS Plastic What's Included: (1)WoodRiver Dust Connection4" to 2-1/4" Funnel Reducer Dust Collection Fittings