Top pick
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,865RV King - 72x80 · list priceSee price
Keystone Montana 3231CK mattress size
Main bed72 × 80 inRV king
That's an RV king, 4 in narrower than a regular king (76 × 80 in). A regular king won't fit, so get an RV king in exactly 72 × 80 in.
About the RV king size →Owner report, 2022. A reported size, not a guarantee: measure your platform first.
Mattresses in 72 × 80 in
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Best value
Mattress InsiderThe Sedona
- All-foam
- 5.5 in thick
- Firm
$40372" x 80" · list priceSee price
Reviewers' favorite
RVMattress.comAurora Luxe Cooling
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress for Temperature Regulation Read review
$2,465RV King - 72x80 · list priceSee price
Best memory foam
Mattress InsiderElation Gel Foam
- Memory foam
- 6 in thick
- cushion firm
$65972" x 80" · list priceSee price
Best hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$1,065RV King 72x80 · list priceSee price
Best all-foam
RVMattress.comPlank Firm
- All-foam
- 10 in thick
- Firm / Extra Firm
Mattress Clarity: Best RV Mattress for Heavy People Read review
$1,532RV King - 72x80 · list priceSee price
Reviewer pick
HelixHelix Midnight
- Hybrid
- 11.5 in thick
- Medium Feel
Sleep Foundation: Best Mattress for Side Sleepers Read review
$1,489RV King · list priceSee price
Reviewer pick
Mattress InsiderPark Meadow Encased Coil II
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
$84972" x 80" · list priceSee price
The Montana bedroom. Measure the platform, not the old mattress, before you buy.
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2021 | 60 × 80 in Queen | – | – | Keystone 2021 brochure |
| 2022 | 72 × 80 in King | – | – | Owner report |
Years not listed weren't published.
Is this your 3231CK?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2021 | Montana 3231CK | 37 ft 5 in | 4 |
| 2022 | Montana 3231CK | 37 ft 5 in | 4 |
| 2023 | Montana 3231CK | 37 ft 5 in | 4 |
| 2024 | Montana 3231CK | 37 ft 5 in | 4 |
| 2025 | Montana 3231CK | 37 ft 5 in | 4 |
| 2026 | Montana 3231CK | 37 ft 5 in | 4 |
Other Montana mattress sizes
Sources
- Keystone (keystonerv.com): https://www.keystonerv.com/product/montana/luxury-fifth-wheels/floorplans/3231CK
Questions
What size mattress is in the Keystone Montana 3231CK?
The main bed is 72 × 80 in (Owner report, 2022).