Great solution Justin. Beautiful furnace. Try to keep it clean now. Great hole saw too. I knew the blanket wouldn't hang on it. Don't try coring through a carpet with it though. Hang city.
I was disappointed you used the tin snips though. Oh, the drill was for masonry. I get it. Well, that's one beautiful hole man. And the saw? That's a hundred year saw.
Badass all around. Way to go dude.