A:Answer Mel, if you review the features and description information on this model, it clearly states that both pairs of side burners can be bridged. The four outside burners are 7 inches in diameter, while the center burner has a 9-inch center and 12-inch outer burner. The cooktop can sense if a pan is present and determine the pan's approximate size to help optimize the performance of the burner, plus it can sense if the pan is removed from the burner. If the pan is not returned to the burner within a predetermined time, the burner is turned off automatically.