RV King Mattress Size: Dimensions and RV Fit Guide
What Is a RV King Mattress?
The RV King mattress is a specialized size designed specifically for larger recreational vehicles, measuring 72 inches wide by 80 inches long (182.9 cm × 203.2 cm). This unique dimension combines the width of a California King with the standard length of a Queen mattress, making it an ideal solution for the spatial constraints of RV master bedrooms. Unlike residential mattresses, the RV King is engineered to fit the fixed bed platforms found in Class A and Class C motorhomes, where ceiling heights, slideout dimensions, and door widths dictate exact mattress specifications. The 72×80-inch footprint provides couples with generous sleeping width while keeping the length manageable for RV floor plans that must accommodate hallways, bathrooms, and storage compartments within a mobile living space. Full-time RVers particularly appreciate this size as it offers near-king comfort without the space penalties of a standard residential king. The RV King has become the premium sleeping option in the RV industry, bridging the gap between comfort and the practical realities of life on the road.
Size at a Glance
Same 72-inch width as a California King but 4 inches shorter, matching standard Queen length at 80 inches.
Bedroom slideout or master area minimum 8 × 10 feet
Who It Fits
- Couples who full-time in Class A or Super C motorhomes
- Master bedroom slideouts in luxury diesel pushers
- Fixed bed platforms in higher-end Class C RVs with rear bedroom layouts
- RV owners upgrading from standard RV Queen size
- Two adults who want residential king comfort in mobile living
- RVers with custom-built or renovated bedroom compartments
- Specialty RV bed frames with platform or storage base configurations
How It Compares
| Type | Width | Length | Notes |
|---|---|---|---|
| California King | 72″ | 84″ | Same width but 4 inches longer; standard residential size won't fit most RV bed platforms |
| Short Queen (RV Queen) | 60″ | 75″ | 12 inches narrower and 5 inches shorter; most common RV mattress size |
| Standard King | 76″ | 80″ | 4 inches wider but same length; too wide for most RV bedroom compartments |
| Queen | 60″ | 80″ | 12 inches narrower but same 80-inch length; residential size with matching length dimension |
Find an RV King Mattress
Browse RV king mattresses built for Class A and Class C motorhomes.
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Pro Tips
- 1 Measure your RV bed platform corner-to-corner before ordering, as some platforms have radiused corners that require special mattress corner cuts to fit properly.
- 2 Invest in RV-specific mattress protectors designed for the 72×80 size rather than using oversized residential protectors that bunch and shift during travel.
- 3 Check your mattress weight against your RV's cargo carrying capacity, as even a few pounds matter when calculating total vehicle weight for safe travel.
- 4 Store extra bedding in vacuum-sealed bags to maximize limited RV closet space, and rotate seasonal bedding at campground mail forwarding locations if full-timing.
Frequently Asked Questions
Will California King sheets fit an RV King mattress?
California King sheets will fit the 72-inch width of an RV King perfectly, but they're designed for 84-inch length versus the RV King's 80 inches. The fitted sheet will work fine as it pulls tight, but the flat sheet and comforters will have 4 extra inches of length that may bunch or drag. Many RV owners use Cal King fitted sheets successfully but opt for standard Queen flat sheets (which match the 80-inch length) or purchase RV-specific bedding sets designed for the 72×80 dimensions.
What mattress profile height works best for RV King beds?
Most RV King mattresses range from 6 to 10 inches in profile height, significantly thinner than residential mattresses which often exceed 12-14 inches. This reduced height accommodates RV bedroom ceiling constraints, slideout mechanisms, and overhead storage compartments. Additionally, thinner profiles reduce weight—a critical consideration for vehicle cargo capacity and fuel efficiency. When selecting a mattress, measure your existing bed platform to ceiling clearance and ensure at least 36 inches of sitting headroom remains after the mattress is installed.
Can I use a standard residential mattress cut down to RV King size?
While technically possible, cutting down a residential mattress is not recommended for RV King dimensions. Mattress construction includes perimeter support systems, foam encasements, and edge reinforcements that become compromised when cut. RV-specific mattresses are engineered from the factory for the 72×80 size with proper edge support throughout. Additionally, RV mattresses often use lighter-weight materials, include features for humidity management in mobile environments, and account for the flexing that occurs during travel—none of which a modified residential mattress provides.
What RV types commonly accommodate RV King mattresses?
RV King mattresses are primarily found in high-end Class A motorhomes, particularly diesel pushers with rear master bedroom layouts and large slideouts. Some premium Class C models with extended cab-over designs or rear bedroom configurations also accommodate this size. Super C motorhomes built on heavy-duty truck chassis often feature RV King beds as well. The size typically requires a dedicated bedroom slideout or a rear bedroom design with at least 8 feet of interior width. Class B campervans and travel trailers rarely have sufficient space for RV King dimensions, making this truly a luxury motorhome mattress size.
For What It's Worth
Some spaces stay with you longer than they should. Grandfather's Class A diesel pusher sat in my driveway for three weeks after the funeral, gleaming and impossibly large, stuffed with everything he couldn't leave behind when he sold the house. The Sudden Abundance, my sister called it—his final year of collecting moon charts, astronomy books, goddess figurines. All dedicated to Artemis, huntress of the night sky he'd chased across forty-eight states. I needed to clear it out, but the master bedroom slideout stopped me cold. That RV King mattress—seventy-two inches wide, eighty long—held more than blankets. Stacked across its six-foot width were journals, star maps, silver jewelry he'd planned to give someone. My grandmother, maybe, twenty years gone. I could sell it all, furniture included. Get a standard mattress, make it rentable. Practical. Instead, I kept it exactly as it was. Spent my first night there surrounded by his Artemis obsession, stretched across those eighty inches of memory. Same width as a California King, the salesman had told him, but better for tight turns. Grandfather had laughed, said he was done with tight turns. Morning light through the windshield found me holding his last journal. Not star charts—letters to my grandmother, unsent. The mattress had been their bed too, I realized, before the slideout became his shrine. Some spaces were never meant to be cleared. They're meant to hold us until we understand what we're really carrying.