Install your oak in your thimble I used a 1/2in piece of drywall as a template and 2in holesaw worked like a charm.I mite have go in overbroad machining the plates and tack welding them to a piece of 2in galvanize ext. Pipe so I could unbolt it to replace the aluminum doorwall screen. No need to drill another hole in your wall when you already have one.
![[Hearth.com] OAK, outside air question [Hearth.com] OAK, outside air question](https://www.hearth.com/talk/data/attachments/162/162402-d4b93424cd11271ce8acafde36c13b6c.jpg?hash=py33IduCr0)
![[Hearth.com] OAK, outside air question [Hearth.com] OAK, outside air question](https://www.hearth.com/talk/data/attachments/162/162402-d4b93424cd11271ce8acafde36c13b6c.jpg?hash=py33IduCr0)