Great all around
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
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$1,465Queen · list priceSee price
That's the same size as a regular queen, so any standard queen mattress fits.
About the RV queen size →Grand Design spec sheet, 2019.
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The Solitude bedroom. Measure the platform, not the old mattress, before you buy.
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2017 | 60 × 80 in Queen | – | – | Grand Design spec sheet |
| 2018 | 60 × 80 in Queen | – | – | Dealer report |
| 2019 | 60 × 80 in Queen | – | – | Grand Design spec sheet |
Years not listed weren't published.

Grand Design's 2019 374TH floorplan.
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2017 | Solitude 374TH | 41' 3" | – |
| 2019 | Solitude 374TH | 41' 3" | – |
The main bed is 60 × 80 in (Grand Design spec sheet, 2019).