Class B+ RVs have a van-style cab with a living space behind it. However, they don’t have a large “cab-over” space that overhangs in front of a Class C. Instead, the Class B+ RV has a small, more aerodynamic cap over the cab that you can usually use for storage or your entertainment center. Most Class B+ motorhomes are built on van chassis, but like a Class C, the body is constructed separately and not part of the original vehicle manufacturer.