Custom size
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
Made to 72 × 74 inGet a quote
That's an RV short king. Few brands stock 72 × 74 in, so order a custom size.
About the RV short king size →Thor spec sheet, 2026.
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Sleep Foundation: Best Mattress for Pressure Relief Read review
Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.
Sleep Foundation: Best Mattress for Pressure Relief Read review
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2025 | 72 × 74 in King | 52 × 96 in | – | Thor spec sheet |
| 2026 | 72 × 74 in King | 52 × 96 in | – | Thor spec sheet |
Years not listed weren't published.

Thor's 2027 29K floorplan.
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2025 | Chateau 29K | 31'-0" | – |
| 2026 | Chateau 29K | 31'-0" | – |
| 2027 | Chateau 29K | 31' | 5 |
The main bed is 72 × 74 in (Thor spec sheet, 2026).
52 × 96 in (Thor spec sheet, 2026).