Weber Charcoal Grills come in a few sizes including 18.5 inches. The size is referring to the cooking area. The cooking grate measures 18.5 inches and allows plenty of room for barbecuing meat. If one wishes to cook for large groups, a larger size Weber grill such as the 22.5 inch grill might be needed. The One-Touch Kettle Charcoal Grill comes in the 18.5 inch size in a couple of versions, the silver and the gold.