Ok guys, I am new to this forum, I have been reading posts for a couple of year's on here. I finally decided to build my own reverse flow, used feldons calculator, wanted some input on my build. I am building a 36"w x 24" x 24" double racks, 24" x 20" 20" Firebox. 4" x 30" long smoke stack, fb/cc opening 4" x 20", diffuser plate will be 32" long by 24" wide, any advise would be appreciated!