1 Numbers represent an ordering by significant words. Various colorings, defined here, differentiate National Historic Landmarks and historic districts from other NRHP buildings, structures, sites or objects.
- A Class A Motorhome, the largest and most luxurious of all RVs, has an average height of 10 feet, and can range from 21 to 40 feet in length. This RV typically requires a garage with a clearance height of at least 14 feet, and 45 to 50 feet in length depending on how much additional storage you wish to have. A Class C Motorhome, which has a distinctive cab-over bunk, has an average height of about 10 feet, and can range from 21 to 35 feet in length.
Size Limitations: Height, 14'; Width, 8'6 (special wide body regulations); Trailer length, not specified (total maximum combined length of 75'); Motorhome length, 55'; Combined length, 75'. Triple towing is allowed but not to exceed maximum combined length of 70'.ize Limitations: Height, 13'6; Width, 8' (8'6 on certain federal highway systems); Trailer length, 40'; Motorhome length, 40'; Combined length, 50'. Triple towing in not allowed. Required Equipment: Safety chain, breakaway switch, flares or reflective signs. Weight of trailer requiring brakes 3,000 pounds.