41 floorplans · 2012–2027
Keystone Montana 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
281CK281CK60 × 80 in2021–2023 · Montana High Country295RL295RL60 × 80 in2021–2026 · Montana High Country331RL331RL60 × 80 in2021–2026 · Montana High Country335BH335BH60 × 80 in2021–2024 · Montana High Country351BH351BH60 × 80 in2021–2026 · Montana High Country373RD373RD60 × 80 in2021–2026 · Montana High Country377FL377FL60 × 80 in2021–2026 · Montana High Country385BR385BR60 × 80 in2021–2026 · Montana High Country
3100RL60 × 80 in2012–2027 · Montana3121RL3121RL70 × 80 in2021–2023 · Montana3231CK3231CK72 × 80 in2021–2026 · Montana
3600RO60 × 80 in2027 · Montana3761FL3761FL60 × 80 in2021–2026 · Montana3763BP3763BP60 × 80 in2021–2023 · Montana3781RL3781RL60 × 80 in2021–2026 · Montana3791RD3791RD60 × 80 in2015–2023 · Montana
3800FL60 × 80 in2026–2027 · Montana3813MS3813MS60 × 80 in2021–2023 · Montana3855BR3855BR60 × 80 in2021–2023 · Montana
3900RK60 × 80 in2026–2027 · Montana3931FB3931FB60 × 80 in2021–2023 · Montana
3100RL60 × 80 in2012–2027 · Montana3121RL3121RL70 × 80 in2021–2023 · Montana3231CK3231CK72 × 80 in2021–2026 · Montana3600RO60 × 80 in2027 · Montana3761FL3761FL60 × 80 in2021–2026 · Montana3763BP3763BP60 × 80 in2021–2023 · Montana3781RL3781RL60 × 80 in2021–2026 · Montana3791RD3791RD60 × 80 in2015–2023 · Montana3800FL60 × 80 in2026–2027 · Montana3813MS3813MS60 × 80 in2021–2023 · Montana3855BR3855BR60 × 80 in2021–2023 · Montana3900RK60 × 80 in2026–2027 · Montana3931FB3931FB60 × 80 in2021–2023 · MontanaOlder floorplans
280CK280CK60 × 80 in2021 · Montana High Country294RL294RL60 × 80 in2021 · Montana High Country330RL330RL60 × 80 in2021 · Montana High Country334BH334BH60 × 80 in2021 · Montana High Country
350BH60 × 80 in2016–2021 · Montana High Country
362RD60 × 80 in2016–2021 · Montana High Country372RD372RD60 × 80 in2021 · Montana High Country376FL376FL60 × 80 in2021 · Montana High Country382TH382TH60 × 80 in2021 · Montana High Country383TH383TH60 × 80 in2021 · Montana High Country384BR384BR60 × 80 in2021 · Montana High Country3120RL3120RL60 × 80 in2021 · Montana3230CK3230CK60 × 80 in2021 · Montana3760FL3760FL60 × 80 in2021 · Montana3762BP3762BP60 × 80 in2021 · Montana3780RL3780RL60 × 80 in2021 · Montana3790RD3790RD60 × 80 in2015–2021 · Montana3812MS3812MS60 × 80 in2021 · Montana3854BR3854BR60 × 80 in2021 · Montana3930FB3930FB60 × 80 in2021 · Montana
350BH60 × 80 in2016–2021 · Montana High Country362RD60 × 80 in2016–2021 · Montana High Country372RD372RD60 × 80 in2021 · Montana High Country376FL376FL60 × 80 in2021 · Montana High Country382TH382TH60 × 80 in2021 · Montana High Country383TH383TH60 × 80 in2021 · Montana High Country384BR384BR60 × 80 in2021 · Montana High Country3120RL3120RL60 × 80 in2021 · Montana3230CK3230CK60 × 80 in2021 · Montana3760FL3760FL60 × 80 in2021 · Montana3762BP3762BP60 × 80 in2021 · Montana3780RL3780RL60 × 80 in2021 · Montana3790RD3790RD60 × 80 in2015–2021 · Montana3812MS3812MS60 × 80 in2021 · Montana3854BR3854BR60 × 80 in2021 · Montana3930FB3930FB60 × 80 in2021 · MontanaMontana mattress sizes by floorplan
| Floorplan | Year | Main bed | Bunks | Source |
|---|---|---|---|---|
| 281CK | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 295RL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 331RL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 335BH | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 351BH | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 373RD | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 377FL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 385BR | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3100RL | 2027 | 60 × 80 in | – | Dealer report |
| 3121RL | 2022 | 70 × 80 in | – | Owner report |
| 3231CK | 2022 | 72 × 80 in | – | Owner report |
| 3600RO | 2027 | 60 × 80 in | – | Dealer report |
| 3761FL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3763BP | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3781RL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3791RD | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3800FL | 2027 | 60 × 80 in | – | Dealer report |
| 3813MS | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3855BR | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3900RK | 2027 | 60 × 80 in | – | Dealer report |
| 3931FB | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 280CK | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 294RL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 330RL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 334BH | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 350BH | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 362RD | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 372RD | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 376FL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 382TH | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 383TH | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 384BR | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3120RL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3230CK | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3760FL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3762BP | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3780RL | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3790RD | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3812MS | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3854BR | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
| 3930FB | 2021 | 60 × 80 in | – | Keystone 2021 brochure |
The newest year with a published size is shown. Each floorplan page lists every year.