rigsize

Fleetwood Discovery 38K mattress size

Years 2020–2027Sold as DiscoveryLength 38' 8"
72 in 80 in
To scale. Dashed: a regular queen.
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 →

Fleetwood spec sheet, 2027.

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.

Great all around
RVMattress.com Signature Hybrid

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
Best value
RVMattress.com CopperFlex Essential

RVMattress.comCopperFlex Essential

  • All-foam
  • 6 in thick
  • five comfort options
$799RV King - 72x80 · list priceSee price
Firm
RVMattress.com Plank Firm

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
Cooling
RVMattress.com Aurora Luxe 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 - 72x80 · list priceSee price
Heavy duty
RVMattress.com Titan Plus Luxe

RVMattress.comTitan Plus Luxe

  • Hybrid
  • 13 in thick
  • Plush
$1,865RV King - 72x80 · list priceSee price
Helix pick
Helix Helix Midnight

HelixHelix Midnight

  • Hybrid
  • 11.5 in thick
  • Medium Feel

Sleep Foundation: Best Mattress for Side Sleepers Read review

$1,489RV King · list priceSee price
RV hybrid
RVMattress.com CopperFlex RV Hybrid

RVMattress.comCopperFlex RV Hybrid

  • Hybrid
  • 10 in thick
  • Medium-Firm
$1,065RV King 72x80 · list priceSee price
Custom size
Mattress Insider Luxury Gel Memory Foam

Mattress InsiderLuxury Gel Memory Foam

  • Memory foam
  • 8 in thick
  • not stated
Made to 72 × 80 inGet a quote
Bedroom in a Discovery

The Discovery bedroom. Measure the platform, not the old mattress, before you buy.

The 38K floorplan

Fleetwood Discovery 38K floorplan, 2027

Fleetwood's 2027 38K floorplan.

Is this your 38K?

Check the year and length against your RV before you order.

YearModelLengthSleeps
2020Discovery 38K38'8"–
2021Discovery 38K40'0"–
2022Discovery 38K38'8"–
2023Discovery 38K38' 8"–
2027Discovery 38K38' 8"–

Other Discovery mattress sizes

38N38WAll Discovery floorplans

Sources

  1. Fleetwood (fleetwoodrv.com): https://www.fleetwoodrv.com/wp-content/uploads/2026/05/Discovery_SalesSheets_MY27.pdf
  2. Fleetwood (fleetwoodrv.com), archived copy: https://web.archive.org/web/20230530140115/https://www.fleetwoodrv.com/models/discovery/?view=specs
  3. recreationalvehicles.info: https://recreationalvehicles.info/2023-fleetwood-discovery-flyer/
  4. Fleetwood (fleetwoodrv.com), archived copy: https://web.archive.org/web/20241208185915/https://www.fleetwoodrv.com/models/discovery-2022/?view=specs
  5. Fleetwood (fleetwoodrv.com), archived copy: https://web.archive.org/web/20211022003139/https://www.fleetwoodrv.com/models/discovery-2021/specs
  6. Fleetwood (fleetwoodrv.com), archived copy: https://web.archive.org/web/20210225103029/https://www.fleetwoodrv.com/models/discovery-1/specs

Questions

What size mattress is in the Fleetwood Discovery 38K?

The main bed is 72 × 80 in (Fleetwood spec sheet, 2027).