- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
That's the same size as a regular queen, so any standard queen mattress fits.
About the RV queen size →Forest River spec page, 2026.
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Sleep Foundation: Best Mattress Overall Read review
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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

The Rockwood bedroom. Measure the platform, not the old mattress, before you buy.
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2025 | Rockwood Ultra Lite 2918BH | 35' 5" | – |
| 2026 | Rockwood Ultra Lite 2918BH | 35' 5" | – |
The main bed is 60 × 80 in (Forest River spec page, 2026).
43 × 74 in (Forest River spec page, 2026).