4" Plastic Blast Gate

The Big Horn 11439 4-Inch ABS Plastic Blast Gate offers a reliable and efficient way to manage airflow between tools in your dust collection system. Designed for small shop setups and portable machines, this blast gate helps isolate suction to the active tool—reducing waste and improving overall performance. The gate body is molded from textured ABS for added grip and resistance to shop wear, while the internal slide gate moves smoothly and can be removed entirely for fast, tool-free cleaning. Whether you're running a router table, miter saw, or benchtop sander, this compact solution gives you better control over dust direction with minimal setup.

Improves system efficiency by directing suction only to the machine in use

Ideal for portable dust collection setups and small shop machines

Constructed from textured ABS plastic for added grip and durability under standard shop conditions

Pairs easily with Big Horn hose connectors, reducers, and fittings to expand or upgrade your shop system.

Sliding gate removes easily for quick cleaning and maintenance

Fits standard 4-inch hose systems (4" outer diameter, 3-3/4” inner diameter)

Use with standard hose clamps (not included) to ensure a secure and airtight connection.