My wife and I opened a deer processing plant last year in Myrtle Beach SC. Trying to learn the how to's about a ton of areas in the smoking arena. Main issue right now is a DIY Smoke house built on a concrete slab(no other options). Want to use gas heat source with convection. I have to do large volumes and want to use roll in sheet pan racks. I am also a culinary graduate and a certified executive chef.I also own a high end fresh fish processing and wholesale distribution company catering to local area restaurants. i would like to use polyurethane filled walkin cooler panels(they handle high temps(500 degrees not a problem) unlike polystyrene panels that melt at around 180 degrees).Really need advice on heating and air circulation. Will be doing jerky and smoked sausages in same unit. i have enjoyed and appreciate all the info I have come across on this forum. This is my first time participating in a forum.