Top pick
Brooklyn BeddingTitan Plus Core
- Hybrid
- 12 in thick
- Firm
$1,399Short Queen - 60x75 · list priceSee price
Thor Quantum WS31 mattress size
Main bed60 × 75 inRV short queen
That's an RV short queen, 5 in shorter than a regular queen. A regular queen would hang off the end, so get an RV short queen.
About the RV short queen size →Thor spec sheet, 2025.
Bunks52 × 96 in
Bunk. Thor spec sheet, 2025.
Common RV bunk sizes →
Mattresses in 60 × 75 in
We may earn a commission when you buy through some of these links. It doesn't change which mattresses we list.
Best value
Mattress InsiderThe Sedona
- All-foam
- 5.5 in thick
- Firm
$33160" x 75" · list priceSee price
Reviewers' favorite
Mattress InsiderPark Meadow Encased Coil II
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
$66960" x 75" · list priceSee price
Best memory foam
Mattress InsiderElation Gel Foam
- Memory foam
- 6 in thick
- cushion firm
$45960" x 75" · list priceSee price
Best hybrid
Brooklyn BeddingTitan Plus Luxe
- Hybrid
- 13 in thick
- Plush
$1,665Short Queen - 60x75 · list priceSee price
Custom size
Mattress InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
Made to 60 × 75 inGet a quote
Bunk mattresses in 52 × 96 in
Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.
Custom size
Mattress InsiderPark Meadow Encased Coil II
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
Made to 52 × 96 inGet a quote
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2020 | 60 × 75 in Queen | 54 × 96 in | – | Thor spec sheet |
| 2021 | 60 × 75 in Queen | 54 × 96 in | – | Thor spec sheet |
| 2022 | 60 × 75 in Queen | 54 × 96 in | – | Thor spec sheet |
| 2023 | 60 × 75 in Queen | 52 × 96 in | – | Thor spec sheet |
| 2024 | 60 × 75 in Queen | 52 × 96 in | – | Thor spec sheet |
| 2025 | 60 × 75 in Queen | 52 × 96 in | – | Thor spec sheet |
Years not listed weren't published.
The WS31 floorplan
Thor's 2025 WS31 floorplan.
Is this your WS31?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2020 | Quantum WS31 | 32'-2" | – |
| 2021 | Quantum WS31 | 32'-4" | – |
| 2022 | Quantum WS31 | 32'-4" | – |
| 2023 | Quantum WS31 | 32'-4" | – |
| 2024 | Quantum WS31 | 32'-4" | – |
| 2025 | Quantum WS31 | 32'-4" | – |
Other Quantum mattress sizes
Sources
- Thor (media-center.thormotorcoach.com): https://media-center.thormotorcoach.com/m/97a0d79ef40d446/original/c7ac2de7-e247-4203-9f77-aee8f1a66cbc_2020-quantum-digital-brochure-oh-spreads-pdf.pdf
- Thor (media-center.thormotorcoach.com): https://media-center.thormotorcoach.com/m/5fd680465ea7fa87/original/1ee02cdd-e1c5-405d-aae9-bee064c27953_2021-oh-quantum-web-pdf.pdf
- Thor (media-center.thormotorcoach.com): https://media-center.thormotorcoach.com/m/30f969846b43a0e5/original/c6ef889a-5ddc-4e30-9ec1-69206e9d02eb_2022-oh-quantum-pdf.pdf
- Thor (media-center.thormotorcoach.com): https://media-center.thormotorcoach.com/m/17bb6e06234f5807/original/df7a7660-361b-4011-a8a7-80f286f6529c_2023-OH-Quantum-pdf.pdf
- Thor (media-center.thormotorcoach.com): https://media-center.thormotorcoach.com/m/3d419b8110fef064/original/b3b9f546-e61a-47b7-97dc-c9fd512773bb_2024-OH-Quantum-pdf.pdf
- Thor (media-center.thormotorcoach.com): https://media-center.thormotorcoach.com/m/7862dac75d169fcf/original/Z64ALJbqstJ9-lIS_2025-TS-Quantum-021225-pdf.pdf
Questions
What size mattress is in the Thor Quantum WS31?
The main bed is 60 × 75 in (Thor spec sheet, 2025).
Will a regular queen mattress fit the Thor Quantum WS31?
No. The platform is 60 × 75 in, an RV short queen. A home queen is 60 × 80 in and hangs off the end.
What size are the Thor Quantum WS31 bunk mattresses?
52 × 96 in (Thor spec sheet, 2025).