26 floorplans · 2012–2027
Keystone Alpine mattress sizes
Pick your floorplan and year for the mattress size that fits.
The floorplan code is on the decal by your door or in your owner's paperwork.
Sold 2023 and later
3011CK70 × 80 in2024–2026 · Alpine
3100RE70 × 80 in2026–2027 · Alpine
3102RL70 × 80 in2023–2025 · Alpine3220RL3220RL70 × 80 in2021–2025 · Alpine
3303CK70 × 80 in2024–2027 · Alpine
3650RL70 × 80 in2012–2023 · Alpine3700FL3700FL70 × 80 in2020–2026 · Alpine
3712KB70 × 80 in2020–2027 · Alpine
3720MD70 × 80 in2022–2025 · Alpine
3790FK70 × 80 in2021–2025 · Alpine
3910RK70 × 80 in2021–2027 · Alpine
3912DS70 × 80 in2023–2025 · AlpineOlder floorplans
3010RE70 × 80 in2014–2017 · Alpine
3011RE70 × 80 in2017 · Alpine
3300GR70 × 80 in2017 · Alpine
3301GR70 × 80 in2017 · Alpine
3400RS70 × 80 in2017 · Alpine
3401RS70 × 80 in2017 · Alpine
3500RL70 × 80 in2017 · Alpine
3501RL70 × 80 in2017 · Alpine
3651RL70 × 80 in2017 · Alpine
3660FL70 × 80 in2017 · Alpine
3661FL70 × 80 in2017 · Alpine3850RD3850RD70 × 80 in2020–2022 · Alpine
3900RE70 × 80 in2015–2017 · Alpine
3901RE70 × 80 in2017 · AlpineAlpine mattress sizes by floorplan
| Floorplan | Year | Main bed | Bunks | Source |
|---|---|---|---|---|
| 3011CK | 2024 | 70 × 80 in | – | Keystone 2024 brochure |
| 3100RE | 2027 | 70 × 80 in | – | Dealer report |
| 3102RL | 2024 | 70 × 80 in | – | Keystone 2024 brochure |
| 3220RL | 2022 | 70 × 80 in | – | Keystone 2022 brochure |
| 3303CK | 2024 | 70 × 80 in | – | Keystone 2024 brochure |
| 3650RL | 2022 | 70 × 80 in | – | Keystone 2022 brochure |
| 3700FL | 2024 | 70 × 80 in | – | Keystone 2024 brochure |
| 3712KB | 2024 | 70 × 80 in | – | Keystone 2024 brochure |
| 3720MD | 2022 | 70 × 80 in | – | Keystone 2022 brochure |
| 3790FK | 2022 | 70 × 80 in | – | Keystone 2022 brochure |
| 3910RK | 2024 | 70 × 80 in | – | Keystone 2024 brochure |
| 3912DS | 2024 | 70 × 80 in | – | Keystone 2024 brochure |
| 3010RE | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3011RE | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3300GR | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3301GR | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3400RS | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3401RS | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3500RL | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3501RL | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3651RL | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3660FL | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3661FL | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3850RD | 2022 | 70 × 80 in | – | Keystone 2022 brochure |
| 3900RE | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
| 3901RE | 2018 | 70 × 80 in | – | Keystone 2018 brochure |
The newest year with a published size is shown. Each floorplan page lists every year.