36" propane cooktop. We can a lot of food so the cooktop has seen very heavy use. The "superboil" feature is apparently negated when used with propane as food will boil faster on the smaller BTU burners. However, boilovers are very common as well even on the smallest burner. My biggest gripe is that the cheap plastic knobs all broke at the stem within one year and the lettering around the knobs is coming off. On the plus side, it is fairly easy to clean. I would not recommend this cooktop if you use propane and/or will be using it heavily.