POWERTEC 70326 P2 Blast Gate 4 Inch, w/Anti Clog and Air Leak Seal for Dust Collection, 2 PK

INCLUDES: (2) 4" Aluminum Blast Gate for Dust Collection (Tapered OD, from 3-3/4" to 4") FUNCTION: By opening and closing select ducts, it directs and regulates the air flow to exactly where you need it and maximizes the extraction of dust | COMPATIBILITY: Will fit 4" ID diameter hose or ducts. When used with flexible dust collection hose, hose clamps are required. FEATURES: The improved air-proof design has closed edges to prevent air from leaking, easy clearing and clog-proof grooves and an easy sliding gate. The gate also has a locking stop to make sure it's aligned perfectly BUILD: Blast gate flaunts a heavy duty aluminum construction and a premium steel sliding gate designed to withstand the wear and tear commonly associated with woodworking and dust collection PLEASE NOTE: Embossed "OUT" mark should face toward the dust collector side to ensure proper hookup with the dust collection system, achieving clog-free performance.