Top pick
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$959Twin · list priceSee price
Forest River Vibe 3400BH mattress size
Bunks38 × 74 in
Bunk. Forest River spec sheet, 2025.
Common RV bunk sizes →
Bunk mattresses in 38 × 74 in
Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.
Best value
RVMattress.comCopperFlex Essential
- All-foam
- 6 in thick
- five comfort options
$299Twin · 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
$1,265Twin · list priceSee price
Best hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$565Twin · list priceSee price
The 3400BH floorplan
Forest River's 2025 3400BH floorplan.
Is this your 3400BH?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2025 | Vibe 3400BH | 39' 10" | – |
| 2026 | Vibe 3400BH | 39' 10" | – |
| 2027 | Vibe 3400BH | 39 ft 10 in | 9 |
Other Vibe mattress sizes
Sources
- Forest River (forestriverinc.com), archived copy: https://web.archive.org/web/20260117190029/https://forestriverinc.com/rvs/vibe/3400BH/10117
- Forest River (forestriverinc.com), archived copy: https://web.archive.org/web/20250831233447/https://www.forestriverinc.com/rvs/ImageHandler/290786/2025%20Vibe%203400BH%20copy.webp
- Forest River (forestriverinc.com), archived copy: https://web.archive.org/web/20251117102203/https://www.forestriverinc.com/rvs/vibe/3400BH/12206
- bishs.com: https://www.bishs.com/product/new-2027-forest-river-rv-vibe-3400bh-3743494-29
Questions
What size are the Forest River Vibe 3400BH bunk mattresses?
38 × 74 in (Forest River spec sheet, 2025).