6" gated exhaust port

thingiverse

I required a compact 6-inch exhaust port for a 6-inch inline duct fan to expel laser fumes from the house safely. Since I didn't want to simply hang it out an open window, I decided to drill a 6-inch hole in the back door of the workshop and vent it that way instead. This has four #10 machine bolt holes to secure it to a wall, door, or piece of wood as needed. It features a 6-inch coupling to attach a 6-inch duct or dust hose, along with a blast gate to seal off the opening when not in use and prevent critters and bugs from entering. Although it's not a conventional blast gate that extends to another 6-inch coupling, it fulfilled my needs effectively.