I'm looking to put double doors on my 250 gallon round gas tank smoker. I saw a post a long time back where the guy took the tank cut out a large section then took metal and welded it on all four sides so it popped away from the tank a bit and made 2 doors that that swing right and left instead of up and down and they interlocked together when closed, if anyone knows this post or has pics of one you did like this it would be great to see how you did it and how well its worked for you. I would like to do mine like that thanks again hope to hear from s lot of you