Find thousands of Class B RVs for sale! Class B Motorhomes, also known as a camping van conversion or van camper, are the most popular type of RV. Class B's are built within the dimensions of a van, but with a raised roof to provide additional headroom. Basic living accommodations inside are ideal for short vacations or weekend trips. Models usually range from 16 to 21 feet. find your next new or used Class B Motorhome for sale from these sellers at RVT.