Undermount space is the amount of space under the vehicle which can be used for storage, water/sewage tanks, and other uses. It varies for different vehicle types:
- Large undermount space - Class A motorhomes, box trucks, some buses
- Moderate undermount space - Step vans, some buses, Class C motorhomes
- Little to no undermount space - Cars, minivans, trailers, and most SUVs, pickup trucks, and Class B motorhomes
The available undermount space also relates to the vehicle's ground clearance.
