A simple vent with internal damper for a smoke machine, made to fit behind a panel where a previous installation was just a collection of random PVC fittings, hoses and massive amounts of duct tape. The output flange is 5" across and has an extra wide lip for mounting to the panel with VHB foam tape. The hose inlet should fit standard 1.5" rubber hose. The damper allows for almost full closure of the pipe so it can adjust flow when more than one is used on the same machine.

Edit: Flipped the vent over for better printing. No changes were done to the mesh. Added version without damper by request.

Printed with 4 shells, 0.2 layers, raft and support on a Z18. Print time for the whole assembly was approximately 14 hours.