DIY’ed a return. Roast me.

House flippers left us this nice hole (roughly 6”) in the back of this plenum, which happened to be the only return in the basement. Got quoted $500 to turn it into an 8” return from the basement family room (opposite the wall).

DIY’ed it for about $75. I’m aware that it shouldn’t be vertical but that was the path of least resistance. The concrete wall on the right (fireplace base) wouldn’t allow it to be horizontal.