Keystone Fuzion 440 Mattress Size (2025

Keystone Fuzion 440 mattress size

Years 2025–2027Sold as FuzionLength 45 ft 11 inSleeps 9

To scale. Dashed: a regular queen.

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 →

recreationalvehicles.info, 2026.

Mattresses in 70 × 80 in

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Top pick

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

Best value

RVMattress.comCopperFlex Essential

All-foam
6 in thick
five comfort options

$799RV King - 70x80 · 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 - 70x80 · list priceSee price

Best hybrid

RVMattress.comCopperFlex RV Hybrid

Hybrid
10 in thick
Medium-Firm

$1,065RV King - 70x80 · 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 - 70x80 · list priceSee price

Custom size

Mattress InsiderPark Meadow Encased Coil II

Hybrid
8 in thick
cushion-firm

Sleep Foundation: Best Mattress for Pressure Relief Read review

Made to 70 × 80 inGet a quote

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

The 440 floorplan

Keystone's 2027 440 floorplan.

Is this your 440?

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

Year	Model	Length	Sleeps
2025	Fuzion 440	45 ft 11 in	9
2026	Fuzion 440	45 ft 11 in	9
2027	Fuzion 440	45 ft 11 in	9

Questions

What size mattress is in the Keystone Fuzion 440?

The main bed is 70 × 80 in (recreationalvehicles.info, 2026).