Turn a rough portable-AC hose pass-through into a clean, intentional opening
This trim piece gives a 4" duct a finished pass-through in a bulkhead, wall panel, cabinet face, window board, camper/RV panel, aircraft panel, or shop project. It includes a backer plate and a cover panel for when the AC is removed.
Why it helps
- Gives the duct a clean, round opening
- Helps keep the hose routed and supported
- Looks better than a rough-cut hole
- Includes a cover panel for closing the opening when the AC is not installed
- Works for aircraft, van, RV, camper, hangar, cabin, and workshop projects





