Woodstock 4in Aluminum Blast Gate

Woodstock 4in Aluminum Blast Gate. This effectively fills the small gap between the two body pieces and helps prevent dust from accumulating in the small space that can build up there if the gate is not operated very frequently. The through plate also self-clears the gate every time it is opened and closed. Package Contents: Woodstock Aluminum Blast Gate Woodstock D4252 4in Aluminum Blast Gate