I run mine bottom wide open and adjust top for heat. Some simple metal scraps suffice for 90+% of anything you'd ever want to do with charcoal. No need for expensive accoutrements if you're a bit handy.

It will for sure not get as hot, or burn low as long, as a BGE, but it has to be about the best damn charcoal burner going if you ain't into dropping $1k + on a giant clay flower pot!

“Life is life and fun is fun, but it's all so quiet when the goldfish die.”