The SLK249 is the same at the SLK240 except for the 5th Burner. Also with it's Bakeview Window & Light and Side Compartment makes cooking a lot easier. It also has Electronic Ignition System, which allows ALL burners, including the Oven, to be lit with a match in case of a power faliure. The Porcelain top makes it a whole lot easier to clean up spills and nasty messes. Please check the features tab for more information.