Universal Porcelain Cast iron burner- Set of Three Long life modular design to fit most 3 and 4 burner grills with this burner style Replaces most cast iron or cast brass burners with a 2 3/8" width and a minimum length of 10 3/4" Dimensions: Burner width: 2.3 inches. Length can be extended from 12.5 inches to 15.0 inches. Please check required burner dimensions before ordering. Extendable venturi and cast iron spacer included; Increase burner coverage to better fit grills for more even cooking Built-in Spider Guards designed to deter infestation during periods of non-use