Myron has a competition trailer with 3 separate smokers. I know a couple of them are insulated. Everybody (BWS, Stumps, Spicewine, etc.) keeps saying they are "double" insulated, but in actuality they aren't "double" insulated....they are double walled with insulation in the middle.
I used to own a Maxey smoker (that's what Myron uses). Myron is a good guy and was influencial in my buying one. He has since taken an ownership stake in the company (either that or he has Maxey make them for him and then he "badge engineers" them into Jack's Smokers).
My smoker wasn't insulated. It was very similar to small one he used in ther recent Dover competiton on Pitmasters show. We added an additional top shelf (rarely used it). It was a darn good hog cooker. I ended up selling it and buying a more practical Backwoods smoker (he still let's me borrow it when I need it
so all is good).http://maxeyfab.com/index.htmlhttp://www.jacksoldsouth.com/cookers/