The Weber Spirit gas grill series has 2 and 3-burner gas grills. Among the 3-burner Spirit grills are the E-310 and the E-320. The E-310 boasts 3 stainless steel burners, 36,000 BTU-per-hour input, an Electronic Crossover ignition system, porcelain enameled cooking grates, porcelain enameled Flavorizer bars, a primary cooking area of 424 sq. in., and a warming rack area of 112 sq.in. On the other hand, the E-320 has 3 stainless steel burners, 36,000 BTU-per-hour input, 12,000 BTU-per-hour input side burner, an Electronic Crossover ignition system, porcelain enameled cooking grates, porcelain enameled Flavorizer bars, and a primary cooking area of 424 sq. in. Both grills are phenomenal grills, though not as large as other Weber grills such as the Summit series.