The floorplan code is on the decal by your door or in your owner's paperwork.
Floorplans
3070RE60 × 80 in2015 · Big Country
3150RL60 × 80 in2015–2017 · Big Country
3450TS70 × 80 in2015–2016 · Big Country
3560SS60 × 80 in2016–2022 · Big Country
3650RL70 × 80 in2015–2017 · Big Country
3700FL70 × 80 in2014 · Big Country
3800FL70 × 80 in2015–2016 · Big Country
3850MB60 × 80 in2016–2018 · Big Country
3851MO70 × 80 in2022 · Big Country
3900FLP70 × 80 in2015–2016 · Big Country
3950FB70 × 80 in2015–2017 · Big Country
3965DSS70 × 80 in2016–2020 · Big Country
4010RD70 × 80 in2015–2019 · Big CountryBig Country mattress sizes by floorplan
| Floorplan | Year | Main bed | Bunks | Source |
|---|---|---|---|---|
| 3070RE | 2015 | 60 × 80 in | – | Heartland spec sheet |
| 3150RL | 2017 | 60 × 80 in | – | Heartland spec sheet |
| 3450TS | 2015 | 70 × 80 in | – | Heartland spec sheet |
| 3560SS | 2017 | 60 × 80 in | – | Heartland spec sheet |
| 3650RL | 2017 | 70 × 80 in | – | Heartland spec sheet |
| 3700FL | 2014 | 70 × 80 in | – | Heartland spec sheet |
| 3800FL | 2016 | 70 × 80 in | – | Heartland spec sheet |
| 3850MB | 2016 | 60 × 80 in | – | Heartland spec sheet |
| 3851MO | 2022 | 70 × 80 in | – | Heartland spec sheet |
| 3900FLP | 2015 | 70 × 80 in | – | Heartland spec sheet |
| 3950FB | 2016 | 70 × 80 in | – | Heartland spec sheet |
| 3965DSS | 2016 | 70 × 80 in | – | Heartland spec sheet |
| 4010RD | 2017 | 70 × 80 in | – | Heartland spec sheet |
The newest year with a published size is shown. Each floorplan page lists every year.