Grills come in many shapes and sizes. Charcoal grills, one of the two main types of grills, can come with a grilling area of 18.5 inches, 22.5 inches, 26 inches, and a number of other sizes. The 18.5 inch charcoal grill is common among grill manufacturers such as Weber. This is the smaller of the charcoal grill, and is suitable for average sized cookouts and barbecues. A larger size would be needed if one needs to cook for large groups.