OK, I've now done a comparison of the specs between a Traeger and this Outdoor Gourmet knockoff. The grill area is 19.5 X 29.5 for about 575 square inches, which puts it between the Lil Tex (418) and the Texas (646). The barrel size is the same as the Lil Tex at 20 inches. So the knockoff is 7.5 inches wider overall. I know the Lil Tex puts out 20K BTU's and the Texas puts out 36K BTU's, but I couldn't find the output for the knockoff, but I bet that it is probably comparable to the Lil Tex. Here is my question. How do they arrive at different BTU outputs? Is the burn pot larger or do they send more forced air in or how?