We have an old Osburn 1600 freestanding stove (like these). Our middle baffle support rotted out. That’d be this piece in the stove (this isn’t exactly the model we have, but close enough):

Or how it looked in real life:

It was holding the fire bricks up but it seemed like it wouldn’t be doing so for long. A couple money shots:

I contacted sbi-international.com and they helped me ensure I had the exact part number. $56.16 (after taxes) and a couple days later the piece showed up. Shockingly heavy, it’s just two pieces of steel and 6 welds. If I were more ambitious, I would have tried to weld it myself, but I already have too many projects on the go.

Replacing it was actually really straightforward and easy. Nothing had to be disassembled,all the pieces are simply leaning on one another. There are 3 fire bricks on each side. There’s a bunch of space above the bricks (the smoke chamber), so pushing up the center brick is about as easy as can be. After that, the side bricks are trivial.

The remaining 5 bricks follow quickly, then the old middle baffle support basically fell out. Angle the new middle baffle support, put the bricks back in, and it’s all done.

Took about 15 minutes and the fireplace is good to go!