rigsize

Fleetwood Discovery 40G mattress size

Years 2020–2027Sold as Discovery LXELength 41' 4"
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.

Bunks28 × 73 in Bunk. Fleetwood spec sheet, 2027. Common RV bunk sizes →

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

Bunk mattresses in 28 × 73 in

Some bunks have a rounded corner, so trace yours before a custom cut. A thicker bunk mattress takes headroom from the bunk above.

Custom size
Mattress Insider Luxury Gel Memory Foam

Mattress InsiderLuxury Gel Memory Foam

  • Memory foam
  • 8 in thick
  • not stated
Made to 28 × 73 inGet a quote
Bedroom in a Discovery

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

Bed sizes by year

YearMain bedBunksOther bedsSource
202672 × 80 in King28 × 73 in–Fleetwood spec sheet
202772 × 80 in King28 × 73 in–Fleetwood spec sheet

Years not listed weren't published.

The 40G floorplan

Fleetwood Discovery 40G floorplan, 2027

Fleetwood's 2027 40G floorplan.

Is this your 40G?

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

YearModelLengthSleeps
2020Discovery LXE 40G41'4"–
2021Discovery LXE 40G41'4"–
2022Discovery LXE 40G41'-4"–
2023Discovery LXE 40G41' 4"–
2024Discovery LXE 40G––
2025Discovery LXE 40G41' 4"–
2026Discovery LXE 40G41' 4"–
2027Discovery LXE 40G41' 4"–

Other Discovery mattress sizes

40M44B44SAll Discovery floorplans

Sources

  1. Fleetwood (fleetwoodrv.com): https://www.fleetwoodrv.com/wp-content/uploads/2026/05/DiscoveryLXE_SalesSheets_MY27.pdf
  2. Fleetwood (fleetwoodrv.com): https://www.fleetwoodrv.com/wp-content/uploads/2025/07/DiscoveryLXE_SalesSheets_MY26.pdf
  3. recreationalvehicles.info: https://recreationalvehicles.info/2025-fleetwood-discovery-lxe-flyer/
  4. recreationalvehicles.info: https://recreationalvehicles.info/2024-fleetwood-discovery-lxe-flyer/
  5. Fleetwood (fleetwoodrv.com), archived copy: https://web.archive.org/web/20230603181517/https://www.fleetwoodrv.com/models/discovery-lxe/?view=specs
  6. recreationalvehicles.info: https://recreationalvehicles.info/2023-fleetwood-discovery-lxe-flyer/
  7. Fleetwood (fleetwoodrv.com), archived copy: https://web.archive.org/web/20260710112308/https://www.fleetwoodrv.com/models/discovery-lxe-2022/?view=specs
  8. Fleetwood (fleetwoodrv.com), archived copy: https://web.archive.org/web/20211022003353/https://www.fleetwoodrv.com/models/discovery-lxe-2021/specs
  9. Fleetwood (fleetwoodrv.com), archived copy: https://web.archive.org/web/20210225095311/https://www.fleetwoodrv.com/models/discovery-lxe-1/specs

Questions

What size mattress is in the Fleetwood Discovery 40G?

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

What size are the Fleetwood Discovery 40G bunk mattresses?

28 × 73 in (Fleetwood spec sheet, 2027).