DESC: The GF40 has a minimum 40-Ib. (20 liters)* and maximum 50-Ibs. (25 liters)* shortening capacity. The frying area is 14 x 15 in. (356 x 381 mm) at shortening level. This 122,000 BTU ( 30,730 kcal/hr.) model is specifically designed for high-volume frying and produces 80 lbs. of french fries per hour -- frozen to done. The multiple orifice burner has no burner tube radiants to burn out. No burner cleaning or air shutter adjustment is required.