Top pick
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,865RV King - 72x80 · list priceSee price
Forest River Flagstaff 8529IKSB mattress size
Main bed72 × 80 inRV king
That's an RV king, 4 in narrower than a regular king (76 × 80 in). A regular king won't fit, so get an RV king in exactly 72 × 80 in.
About the RV king size →Forest River spec sheet, 2021.
Mattresses in 72 × 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
Mattress InsiderThe Sedona
- All-foam
- 5.5 in thick
- Firm
$40372" x 80" · 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
$2,465RV King - 72x80 · list priceSee price
Best memory foam
Mattress InsiderElation Gel Foam
- Memory foam
- 6 in thick
- cushion firm
$65972" x 80" · list priceSee price
Best hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$1,065RV King 72x80 · list priceSee price
Best all-foam
RVMattress.comPlank Firm
- All-foam
- 10 in thick
- Firm / Extra Firm
Mattress Clarity: Best RV Mattress for Heavy People Read review
$1,532RV King - 72x80 · list priceSee price
Reviewer pick
HelixHelix Midnight
- Hybrid
- 11.5 in thick
- Medium Feel
Sleep Foundation: Best Mattress for Side Sleepers Read review
$1,489RV King · list priceSee price
Reviewer pick
Mattress InsiderPark Meadow Encased Coil II
- Hybrid
- 8 in thick
- cushion-firm
Sleep Foundation: Best Mattress for Pressure Relief Read review
$84972" x 80" · list priceSee price
The Flagstaff bedroom. Measure the platform, not the old mattress, before you buy.
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2020 | 72 × 80 in King | – | – | 2020 Forest River Flagstaff Fifth Wheels brochure |
| 2020 | 72 × 80 in King | – | – | Forest River spec sheet |
| 2021 | 72 × 80 in King | – | – | 2021 Forest River Flagstaff Fifth Wheels brochure |
| 2021 | 72 × 80 in King | – | – | Forest River spec sheet |
Years not listed weren't published.
Is this your 8529IKSB?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2020 | Flagstaff Classic 8529IKSB | 35' 11" | – |
| 2021 | Flagstaff Classic 8529IKSB | 36' | – |
Other Flagstaff mattress sizes
Sources
- recreationalvehicles.info: https://recreationalvehicles.info/2021-forest-river-flagstaff-fifth-wheels/2021-forest-river-flagstaff-fifth-wheels-brochure-page-010.jpg
- recreationalvehicles.info: https://recreationalvehicles.info/2020-forest-river-flagstaff-fifth-wheels/2020-forest-river-flagstaff-fifth-wheels-brochure-page-005.jpg
Questions
What size mattress is in the Forest River Flagstaff 8529IKSB?
The main bed is 72 × 80 in (Forest River spec sheet, 2021).