The floorplan code is on the decal by your door or in your owner's paperwork.
| Floorplan | Year | Main bed | Bunks | Source |
|---|---|---|---|---|
| 40RT | 2023 | 72 × 80 in | 48 × 74 in | Thor spec sheet |
| 45BX | 2023 | 72 × 80 in | 28 × 74 in, 48 × 74 in | Thor spec sheet |
| 45MX | 2023 | 72 × 80 in | 48 × 74 in | Thor spec sheet |
| 45JA | 2020 | 72 × 80 in | 54 × 74 in | Thor spec sheet |
The newest year with a published size is shown. Each floorplan page lists every year.