The SGS® Double Side Burner: There simply isn't a better side burner made! 18,500 BTU's per burner, 304 grade stainless steel, automatic ignition, 8mm 304 grade stainless steel cooking grates and a 304 grade stainless steel body with a slide-hinge removable cover, and it matches perfectly with the SGS ® Premium Grill! It is a beauty! The SGS® Single Top Mounted Side Burner: This unit is made of the same quality materials as our double burner, but, because of its top mount, it can be installed above a refrigerator to conserve space. 18,500 BTU's and includes 304 grade stainless steel removable cover.