Great all around
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,865RV King - 70x80 · list priceSee price
Heartland Big Country 3800FL mattress size
Main bed70 × 80 inRV king
That's an RV king, 6 in narrower than a regular king (76 × 80 in). A regular king won't fit, so get an RV king in exactly 70 × 80 in.
About the RV king size →Heartland spec sheet, 2016.
Mattresses in 70 × 80 in
We may earn a commission when you buy through some of these links. It doesn't change which mattresses we list.
Best value
RVMattress.comCopperFlex Essential
- All-foam
- 6 in thick
- five comfort options
$799RV King - 70x80 · list priceSee price
Firm
RVMattress.comPlank Firm Luxe
- Hybrid
- 13 in thick
- Firm / Extra Firm
$1,865RV King - 70x80 · list priceSee price
Cooling
RVMattress.comAurora Luxe Cooling
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress for Temperature Regulation Read review
$2,465RV King - 70x80 · list priceSee price
RV hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$1,065RV King - 70x80 · list priceSee price
Custom size
Mattress InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
Made to 70 × 80 inGet a quote
The 3800FL floorplan
Heartland's 2016 3800FL floorplan.
Is this your 3800FL?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2015 | Big Country 3800FL | 41' 9" | – |
| 2016 | Big Country 3800FL | 41' 9" | 3-4 |
Other Big Country mattress sizes
Sources
- Heartland (heartlandrvs.com), archived copy: https://web.archive.org/web/20161002082825/http://www.heartlandrvs.com:80/brands/luxuryfw/big-country/bc-3800-fl
- Heartland (heartlandrvs.com): https://heartlandrvs.com/wp-content/uploads/2021/02/2015-BC-8pg-Lit.pdf
Questions
What size mattress is in the Heartland Big Country 3800FL?
The main bed is 70 × 80 in (Heartland spec sheet, 2016).