Check the listing for details. WOODRIVER Dust Connection 5" Aluminum Blast Gate Fitting for Dust Collection Sys. Condition: New. Listed at 35.98 USD. NEW, WOODRIVER Dust Connection 5" Aluminum Blast Gate Fitting for Dust Collection System, 162293, 2-sided die cast aluminum frame, 5" OD port on either side of the gate 1-1/4" long, Blast gate fitting allows your to shut off one branch of your dust collection system, WoodRiver® Aluminum Blast Gate Dust Collection Fitting allows you to close one branch of your central dust collection system while you are using the other. Simple open or shut design has flat, steel plate that moves inside a 2-sided die-cast aluminum frame to provide a pass-through or shutoff to connect your dust collector to your system or a branch line to one of your tools. Frame is open on one end to prevent waste material from packing inside the frame to hamper operation and includes locking knob to hold gate in open or.