I will post you a pic in the morning. I have to get it from the storage shed. My Okie Joe is 1/4" thick. It holds the heat very well with very minimal leakage. I do not need a gasket on this smoker. I did have a New Braunfels Black Diamond. On the Black Diamond I did mod it with a silicone gasket. It worked great!
OK Joe's Longhorn & Vertical Roasting Oven, Brinkmann Cimmaron,'69,'73,'84,'89 Weber Kettle