RV King Mattress: Size Guide, Best Materials & How to Find the Right Fit
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RV King Mattress: Size Guide, Best Materials & How to Find the Right Fit
An RV king mattress gives you true king-sized sleeping comfort while you travel — but RV dimensions, ceiling heights, and installation constraints make choosing the right mattress more specific than a standard home purchase.
This guide covers the standard RV king dimensions, what materials work best in an RV environment, thickness considerations, and how to get a custom-sized mattress if your RV has non-standard measurements.
02RV King Mattress Dimensions
RV king mattresses are not a fully standardized size — dimensions vary by manufacturer and RV model. The most common RV king measurements are:
| RV King Type | Width | Length |
|---|---|---|
| Short RV King | 72" | 75" |
| Standard RV King | 72" | 78" |
| Long RV King | 72" | 80" |
Before ordering, measure your RV sleeping platform directly. Don't rely on your RV's listed specifications — measure the actual mattress base to account for any irregularities or unique configurations.
03RV King vs Standard King
| Mattress | Width | Length |
|---|---|---|
| Standard King | 76" | 80" |
| California King | 72" | 84" |
| RV King (most common) | 72" | 75"–80" |
The RV king is narrower than a standard king by 4 inches. A standard king will not fit most RV configurations. A California king is closer in width but typically too long for most RV sleeping areas — though some slide-out RVs can accommodate it.
04Best Mattress Materials for RV Use
RVs present unique challenges for mattresses: moisture from temperature changes, limited ventilation in enclosed spaces, and vibration from road travel. Material choice matters more in an RV than at home.
High-Density Foam
A reliable choice for RV use. High-density foam is durable, resistant to compression from road vibration, and relatively lightweight. Look for foam rated at 1.8 lbs/ft³ or higher for meaningful durability. At 6–8" thickness, high-density foam strikes a good balance between comfort and ceiling clearance.
Memory Foam
Conforms well and absorbs vibration effectively. Temperature-sensitive — can sleep warm in hot climates or feel stiff in cold conditions. Gel-infused memory foam mitigates the heat issue. Good for RV use if you prioritize motion isolation.
Hybrid (Coils + Foam or Latex)
Hybrid mattresses combine the support of pocketed coils with the comfort of foam or latex. They offer better breathability than all-foam options and more support for heavier sleepers. Slightly heavier than foam-only, but the performance improvement is worth it in most cases. Many RV travelers find hybrids the best all-around choice.
Latex
Natural latex is exceptionally durable, naturally breathable, and resistant to moisture and mold — all valuable properties in an RV environment. It's heavier than foam options and costs more, but provides superior longevity and comfort. If you spend significant time in your RV, latex is worth the investment.
05Thickness Considerations for RV Mattresses
RV ceiling height — especially in over-cab and loft sleeping areas — limits how thick your mattress can be. More thickness isn't always better in an RV.
- 4–6" mattresses: Best for bunk-style and overhead sleeping areas where clearance is tight
- 6–8" mattresses: Standard RV bedroom use — good comfort without sacrificing too much headroom
- 8–10" mattresses: For full slide-out bedrooms with good ceiling height and where you want home-like comfort
Also consider the sleeping platform base. RV bases with slats need a mattress that can handle uneven support. A higher-density foam or a hybrid with a good coil gauge will hold up better than a lower-density foam over time.
06Installation Tips
Measure the Platform First
Measure length, width, and any irregular corners or cutouts before ordering. Some RV sleeping platforms have diagonal corners, storage cutouts, or non-rectangular shapes. Document these before ordering — especially if you're going custom.
Prepare the Base
Clean the platform and check for sharp edges or protrusions that could damage the mattress. If the base has slats, check that spacing isn't more than 3–4 inches to prevent the mattress from sagging between gaps.
Secure the Mattress
RV mattresses can shift during travel. Use a non-slip mat between the mattress and platform, or add a mattress retainer rail to the foot of the platform. This matters most in slide-out beds that need to retract while traveling.
07Custom Sizing Options
If your RV has non-standard dimensions — irregular corners, unique width, or a shorter-than-standard length — a custom-sized mattress ensures a proper fit. LA Mattress Store offers custom sizing for width, length, and thickness.
To get a quote: contact us with your exact measurements (including any corner cuts or unique shapes). We'll help you find the right material and configuration.
Custom RV mattresses are typically available in the same materials as standard mattresses — high-density foam, memory foam, hybrid, and latex options.
08Frequently Asked Questions
What size is an RV king mattress?
Most RV king mattresses are 72 inches wide and 75 to 80 inches long, depending on the RV model. Measure your specific sleeping platform before ordering — dimensions vary.
Will a regular king mattress fit in an RV?
A standard king (76" × 80") is typically too wide for RV king spaces, which are usually 72" wide. A California king (72" × 84") is the correct width but often too long. Always measure your platform.
What thickness is best for an RV mattress?
Depends on your sleeping area. 4–6" for overhead and bunk areas; 6–8" for standard RV bedrooms; 8–10" for large slide-out rooms with good headroom. Consider ceiling height and platform base type.
What's the best mattress material for an RV?
High-density foam and hybrid mattresses are the most popular choices for RVs. Natural latex is the premium option for durability and breathability, particularly if you travel frequently or for extended periods.
Can I get a custom-sized RV mattress?
Yes. LA Mattress Store offers custom sizing for RV mattresses — including irregular dimensions and corner cuts. Contact us with your measurements for a quote.
How do I keep my RV mattress in place while driving?
Use a non-slip mattress pad between the mattress and platform, or add a bed retainer rail at the foot of the platform. For slide-out beds, ensure the mattress is secured before the slide-out is retracted.
Do you deliver RV mattresses in Los Angeles?
Yes. We offer free delivery across the Los Angeles area. For custom orders, delivery timelines may vary. Contact us for details.
Frequently Asked Questions
Most RV king mattresses are 72 inches wide and 75 to 80 inches long, depending on the RV model. Measure your specific sleeping platform before ordering — dimensions vary.
A standard king (76" × 80") is typically too wide for RV king spaces, which are usually 72" wide. A California king (72" × 84") is the correct width but often too long. Always measure your platform.
Depends on your sleeping area. 4–6" for overhead and bunk areas; 6–8" for standard RV bedrooms; 8–10" for large slide-out rooms with good headroom. Consider ceiling height and platform base type.
High-density foam and hybrid mattresses are the most popular choices for RVs. Natural latex is the premium option for durability and breathability, particularly if you travel frequently or for extended periods.
Yes. LA Mattress Store offers custom sizing for RV mattresses — including irregular dimensions and corner cuts. Contact us with your measurements for a quote.
Use a non-slip mattress pad between the mattress and platform, or add a bed retainer rail at the foot of the platform. For slide-out beds, ensure the mattress is secured before the slide-out is retracted.
Yes. We offer free delivery across the Los Angeles area. For custom orders, delivery timelines may vary. Contact us for details.
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