Great all around
RVMattress.comSignature Hybrid
- Hybrid
- 13.25 in thick
- Soft / Medium / Firm
Sleep Foundation: Best Mattress Overall Read review
$1,332Short Queen - 60x74 · list priceSee price
Forest River Flagstaff 21FBRS mattress size
Main bed60 × 74 inRV short queen
That's an RV short queen, 6 in shorter than a regular queen. A regular queen would hang off the end, so get an RV short queen.
About the RV short queen size →Forest River spec sheet, 2026.
Mattresses in 60 × 74 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
$524Short Queen - 60x74 · list priceSee price
Firm
RVMattress.comPlank Firm Luxe
- Hybrid
- 13 in thick
- Firm / Extra Firm
$1,598Short Queen - 60x74 · 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
$1,865Short Queen - 60x74 · list priceSee price
Heavy duty
RVMattress.comTitan Plus Luxe
- Hybrid
- 13 in thick
- Plush
$1,665Short Queen - 60x74 · list priceSee price
Helix pick
HelixHelix Midnight
- Hybrid
- 11.5 in thick
- Medium Feel
Sleep Foundation: Best Mattress for Side Sleepers Read review
$1,183Short Queen · list priceSee price
RV hybrid
RVMattress.comCopperFlex RV Hybrid
- Hybrid
- 10 in thick
- Medium-Firm
$799Short Queen - 60x74 · list priceSee price
Custom size
Mattress InsiderLuxury Gel Memory Foam
- Memory foam
- 8 in thick
- not stated
Made to 60 × 74 inGet a quote
The Flagstaff bedroom. Measure the platform, not the old mattress, before you buy.
Bed sizes by year
| Year | Main bed | Bunks | Other beds | Source |
|---|---|---|---|---|
| 2018 | 60 × 74 in | – | – | 2018 Forest River Flagstaff Micro Lite brochure |
| 2018 | 60 × 74 in | – | – | Forest River spec sheet |
| 2020 | 60 × 74 in | – | – | 2020 Forest River Flagstaff Travel Trailers brochure |
| 2020 | 60 × 74 in | – | – | Forest River spec sheet |
| 2021 | 60 × 74 in Queen | – | – | 2021 Forest River Flagstaff Travel Trailers brochure |
| 2021 | 60 × 74 in Queen | – | – | Forest River spec sheet |
| 2026 | 60 × 74 in Queen | – | – | 2026 Forest River Flagstaff Travel Trailers brochure |
| 2026 | 60 × 74 in Queen | – | – | Forest River spec sheet |
Years not listed weren't published.
Is this your 21FBRS?
Check the year and length against your RV before you order.
| Year | Model | Length | Sleeps |
|---|---|---|---|
| 2018 | Flagstaff Micro Lite 21FBRS | 21' 9" | – |
| 2020 | Flagstaff Micro Lite 21FBRS | 22' 4" | – |
| 2021 | Flagstaff Micro Lite 21FBRS | 22' 4" | – |
| 2023 | Flagstaff Micro Lite 21FBRS | 22' 4" | 4 |
| 2025 | Flagstaff Micro Lite 21FBRS | 22' 4" | 3 |
| 2026 | Flagstaff Micro Lite 21FBRS | 22' 4" | – |
Other Flagstaff mattress sizes
Sources
- recreationalvehicles.info: https://recreationalvehicles.info/2026-forest-river-flagstaff-travel-trailers/2026-forest-river-flagstaff-travel-trailers-brochure-page-017.jpg
- funtownrv.com: https://www.funtownrv.com/product/used-2025-forest-river-rv-flagstaff-micro-lite-21fbrs-3758296-29
- bishs.com: https://www.bishs.com/product/used-2023-forest-river-rv-flagstaff-micro-lite-21fbrs-3830165-29
- recreationalvehicles.info: https://recreationalvehicles.info/2021-forest-river-flagstaff-travel-trailers/2021-forest-river-flagstaff-travel-trailers-brochure-page-008.jpg
- recreationalvehicles.info: https://recreationalvehicles.info/2020-forest-river-flagstaff-travel-trailers/2020-forest-river-flagstaff-travel-trailers-brochure-page-009.jpg
- recreationalvehicles.info: https://recreationalvehicles.info/2018-forest-river-flagstaff-micro-lite/2018-forest-river-flagstaff-micro-lite-brochure-page-007.jpg
Questions
What size mattress is in the Forest River Flagstaff 21FBRS?
The main bed is 60 × 74 in (Forest River spec sheet, 2026).
Will a regular queen mattress fit the Forest River Flagstaff 21FBRS?
No. The platform is 60 × 74 in, an RV short queen. A home queen is 60 × 80 in and hangs off the end.