This is a remix of the excellent https://www.thingiverse.com/thing:6619437 remodelled from scratch in onshape. Design is here in case you want to modify for your own purposes:
Cut a 7.25 inch (~185mm) hole in the surface you're attaching this to, screw it in. I think I used #8 wood screws. I have a portable Air Conditioner from the local hardware store from a brand I have never heard of and this worked great. The hole size must be quasi standard. Print Settings
Printer Brand:
Bambulabs
Printer:
Bambu X1C
**Rafts:**
No
Supports:
No
**Resolution:**
0.2
Infill:
15
**Filament:** Generic PETG White
Category: Replacement Parts
The author remixed this model. Imported from Thingiverse.
Made it a circle and added more holes