Class C is a mid-size option for RVs.
Their size is normally from 20 to 30 feet and weight is about 10,000 to 13,000 pounds. Class C RVs are not quite as big as a Class A, however not as small as a Class B. The sleeping quarters in a Class C are often over the cab with another area in the back. And you might find slide outs similar to those common in larger Class A RVs.