National RV dimensions
Length, beam and height for 8 National RV models, from the maker's own spec pages and brochures. Every figure links back to its source and shows the date we last checked it. Where the source reads web.archive.org, the figure comes from a saved copy of the maker's own page. These figures are part of the Vehicle Storage Size Guide.
| Model | Type | Length | Length on trailer (boats) | Beam / width | Height | Source | Checked |
|---|---|---|---|---|---|---|---|
| Dolphin 5320 | Class A (gas) | 33′ 9″ / 10.29 m | — | no figure | no figure | web.archive.org | Nov 2, 2026 |
| Dolphin 5342 | Class A (gas) | 34′ 9″ / 10.59 m | — | no figure | no figure | web.archive.org | Nov 2, 2026 |
| Dolphin 5355 | Class A (gas) | 36′ 0″ / 10.97 m | — | no figure | no figure | web.archive.org | Nov 2, 2026 |
| Dolphin 5375 | Class A (gas) | 37′ 2″ / 11.33 m | — | no figure | no figure | web.archive.org | Nov 2, 2026 |
| Dolphin LX 6320 | Class A (gas) | 33′ 9″ / 10.29 m | — | no figure | no figure | web.archive.org | Nov 2, 2026 |
| Dolphin LX 6342 | Class A (gas) | 34′ 9″ / 10.59 m | — | no figure | no figure | web.archive.org | Nov 2, 2026 |
| Dolphin LX 6355 | Class A (gas) | 36′ 0″ / 10.97 m | — | no figure | no figure | web.archive.org | Nov 2, 2026 |
| Dolphin LX 6375 | Class A (gas) | 37′ 2″ / 11.33 m | — | no figure | no figure | web.archive.org | Nov 2, 2026 |
No figure means we don't have that number from the maker's own pages. We don't guess at it.
The methodology page explains where every number comes from and how we check it.
How to cite these numbers
To cite these numbers, please use:
RV Storage Depot, Vehicle Storage Size Guide: National RV, version 2026-11-03, guide.rvstoragedepot.com/rvs/national-rv
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Last updated 2026-11-03. Specs: manufacturer published specifications, links in each row.