Keystone Arcadia 3140RK Mattress Size (2024

Keystone Arcadia 3140RK mattress size

Years 2024–2025Sold as ArcadiaLength 35 ft 10 inSleeps 4

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 →

Keystone 2024 brochure, 2024.

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

The 3140RK floorplan

Keystone's 2025 3140RK floorplan.

Is this your 3140RK?

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

Year	Model	Length	Sleeps
2024	Arcadia 3140RK	35 ft 10 in	4
2025	Arcadia 3140RK	35 ft 10 in	4

Questions

What size mattress is in the Keystone Arcadia 3140RK?

The main bed is 70 × 80 in (Keystone 2024 brochure, 2024).