The floorplan code is on the decal by your door or in your owner's paperwork.
Sold 2023 and later
34B34B72 × 80 in2021–2025 · Berkshire37A37A72 × 80 in2018–2025 · Berkshire XL Diesel 380HP Engine, Berkshire XL39A39A72 × 80 in2018–2026 · Berkshire, Berkshire Diesel 360HP Engine40C40C72 × 80 in + 30 × 73 in bunks2017–2024 · Berkshire XL Diesel 380HP Engine, Berkshire XL40D40D72 × 80 in2019–2024 · Berkshire XL, Berkshire XL Diesel 380HP Engine40E40E72 × 80 in + 30 × 73 in bunks2021–2024 · Berkshire XL40F40F72 × 80 in + 30 × 73 in bunks2021–2024 · Berkshire45A45A72 × 80 in + 30 × 73 in bunks2019–2025 · Berkshire XLT45CA45CA72 × 80 in + 30 × 73 in bunks2021–2025 · Berkshire XLT45E45E72 × 80 in2022–2025 · Berkshire XLT
Older floorplans
34QS72 × 80 in2015–2020 · Berkshire, Berkshire Diesel 340HP Engine, Berkshire Diesel 360HP Engine38A38A60 × 80 in2015–2019 · Berkshire, Berkshire Diesel 340HP Engine, Berkshire Diesel 360HP Engine40A40A72 × 80 in2016–2017 · Berkshire XL, Berkshire XL Diesel 380HP Engine40B40B72 × 80 in2017–2018 · Berkshire XL Diesel 380HP Engine40BH40BH60 × 80 in2015–2019 · Berkshire XL, Berkshire XL Diesel 380HP Engine43B43B72 × 80 in2017–2019 · Berkshire XLT43C43C72 × 80 in2017–2019 · Berkshire XLT45B45B72 × 80 in2019–2021 · Berkshire XLTBerkshire mattress sizes by floorplan
| Floorplan | Year | Main bed | Bunks | Source |
|---|---|---|---|---|
| 34B | 2026 | 72 × 80 in | – | 2026 Forest River Berkshire brochure |
| 37A | 2025 | 72 × 80 in | – | Forest River spec sheet |
| 39A | 2026 | 72 × 80 in | – | 2026 Forest River Berkshire brochure |
| 40C | 2024 | 72 × 80 in | 30 × 73 in | Forest River spec sheet |
| 40D | 2024 | 72 × 80 in | – | Forest River spec sheet |
| 40E | 2024 | 72 × 80 in | 30 × 73 in | Forest River spec sheet |
| 40F | 2026 | 72 × 80 in | 30 × 73 in | 2026 Forest River Berkshire brochure |
| 45A | 2025 | 72 × 80 in | 30 × 73 in | Forest River spec sheet |
| 45CA | 2025 | 72 × 80 in | 30 × 73 in | Forest River spec sheet |
| 45E | 2025 | 72 × 80 in | – | Forest River spec sheet |
| 34QS | 2020 | 72 × 80 in | – | Forest River spec sheet |
| 38A | 2018 | 60 × 80 in | – | 2018 Forest River Berkshire brochure |
| 40A | 2018 | 72 × 80 in | – | 2018 Forest River Berkshire XL brochure |
| 40B | 2018 | 72 × 80 in | – | 2018 Forest River Berkshire XL brochure |
| 40BH | 2018 | 60 × 80 in | – | 2018 Forest River Berkshire XL brochure |
| 43B | 2018 | 72 × 80 in | – | 2018 Forest River Berkshire XLT brochure |
| 43C | 2018 | 72 × 80 in | – | 2018 Forest River Berkshire XLT brochure |
| 45B | 2021 | 72 × 80 in | – | 2021 Forest River Berkshire XLT brochure |
The newest year with a published size is shown. Each floorplan page lists every year.