Best 46 Inch Wide Mattress Options for Narrow Beds and RV Needs
If you’re shopping for a 46 inch wide mattress, you’re likely choosing between compact, RV-ready, or custom-foam builds. These options emphasize space efficiency without sacrificing comfort. The top picks below are suited for different buyers: RV owners and travelers may prefer compact or flexible foam cores; DIY enthusiasts might favor universal foams for custom mattress projects; and shade-tree renovators will benefit from easier cuts and alignments. The table below highlights five strong candidates based on build type, material, and intended use.
| Product | Best For | Notes |
|---|---|---|
| FoamTouch 4″ Foam Sheet | DIY mattress replacement, cushions | 4″ thick; versatile 46″ x 75″ size |
| Foamma 4” x 48″ x 75″ | RV bunks, campers | Firm foam; US-made |
| Foam Global Roam 2.0 RV Mattress | RV travelers seeking hybrid feel | Gel memory foam with coils |
| Excel Sleep 8″ Green Tea Memory Foam | Small suites, guest rooms | Green tea-infused memory foam |
| FoamRush 4″ Bunk/Sleep | Multiple DIY projects | Made in USA, varied applications |
FoamTouch 4” Foam Sheet for Cushions and Mattress Builds
Best for: DIY mattress builds and cushion projects. The FoamTouch sheet offers high-density polyurethane foam to maintain shape and comfort over time. It’s a solid choice when you want a cost-effective, customizable base for a 46″ wide mattress frame or padding for a daybed.
Key features include premium high-density support and generous dimensions: 4 inches thick by 46 inches wide by 75 inches long. This size is practical for mattress replacements in modular setups or creating pillow inserts and window-seat cushions. A limitation to consider is that it comes as foam only, without a cover, which means you’ll need a separate cover or fabric wrap for hygiene and durability.
Foamma 4” x 48″ x 75″ Foam, Firm for RV and Camper
Best for: RV bunks, campers, and travel trailers that require a firm, supportive core. The foam is made in the USA and features a density around 1.8 with a compression rate of 44 pounds, aiming for longer lifespan and reliable support. The product is described as long-lasting and comfortable for nighttime use.
Selected for travelers who want a straightforward foam replacement that’s easy to cut and fit into narrow beds. A caution: it does not come with a cover, so you’ll need to source a protective covering separately. Its 48″ width makes it slightly wider than 46″, which is useful if you’re adapting an existing frame or cushion system.
Foam Global Roam 2.0 RV 12″ Hybrid Mattress
Best for: RV travelers seeking a blend of memory foam comfort and coil support. The Roam 2.0 is a 12″ hybrid mattress designed to offer a medium feel, with gel memory foam and individual coils to improve pressure relief and support across different sleep positions. It is made in the USA, appealing to buyers who prefer domestic production.
Why chosen: It provides a more traditional mattress experience in a compact RV-ready format. Limitation: being a hybrid, it may be heavier and less flexible for easy transport compared with pure foam options. Ensure your RV bed frame supports a 12″ profile and that the width can fit 46″ spaces or adaptable frames.
Excel Sleep 8″ Green Tea Memory Foam Mattress
Best for: Small suites or guest rooms needing medium-firm support with extra freshness. The 8″ memory foam mattress is infused with green tea and certified via CertiPUR-US standards, which can be appealing for buyers prioritizing material safety and odor control.
Selected for sleepers who want a balance of comfort and support with a fresh feel. Caution: color and cover options are not specified in the brief, so verify fabric compatibility with your bedding setup before purchase.
FoamRush 4-Inch Bunk RV Mattress Replacement
Best for: Quick RV bed makeovers and diverse DIY projects where a 4″ thickness can meet space constraints. The FoamRush lineup emphasizes Certipur-US certification and a wide range of applications, from RVs to window seats and custom cushions.
Why chosen: It’s a versatile option that can be cut to fit 46″ widths in many setups. Limitation: the model shown is a 4″ sheet; ensure the final bed height and quilted toppers align with your existing frame or bedding layout. It’s ideal for builders who want a reliable foam base with flexible uses.
FoamRush 3-Inch Bunk RV Mattress Replacement
Best for: Compact RV beds needing medium-firm support with a lighter profile. The 3-inch bunk option mirrors FoamRush’s emphasis on quality certification and versatile applications for a broad range of DIY projects, including RVs and custom cushions.
Chosen for buyers who want to stay within tighter height limits while maintaining adequate support. Caution: thinner foam may compress more visibly under heavy use or taller occupants; check your frame’s height allowances before buying.
hoggisleep 7 Inch Truck Mattress
Best for: Upgrading a truck bed with a taller, more supportive mattress on long-haul routes. This 7″ deep mattress uses AquaSoft Memory foam layered with durable support and stabilizing fibers to reduce pressure points and back pain. The cover is tough and MVSS-302 certified for road life durability.
Why chosen: It provides a premium sleep surface for truckers and fleet drivers who need a wider, more comfortable bed in a 42″ wide frame. Limitation: at 42″ width, it is slightly narrower than 46″; ensure your bed accepts this dimension or consider frame modifications if you require exactly 46″.
Excel Sleep 8″ Green Tea Memory Foam Mattress (Alternate Size)
Best for: Those who want the same green tea-infused comfort in a similar 46″ wide framework but with a slightly different sizing option. This variant emphasizes safety with CertiPUR-US certified foams and fabrics.
Why chosen: It broadens the selection for buyers who prefer a memory foam feel with a focus on long-term freshness. Caution: verify exact width and depth to ensure compatibility with your frame and bedding configuration.
Buying Guide: What To Consider When Picking a 46 Inch Wide Mattress
- Intended use: Are you building a custom mattress, renovating an RV bed, or choosing a ready-made unit? Your use case determines thickness, material, and whether a hybrid or pure foam core is best.
- Width and height: A 46″ width often needs compatible frames or modular components. Check surrounding furniture and frame depth to avoid interference with doors or cabinetry.
- Foam density and feel: Higher density foams offer better support and durability; memory foam adds contouring and pressure relief but may retain heat. Hybrid options balance feel and support with coils.
- Covering and maintenance: Some foams ship without covers. Consider a protective cover or fabric that fits your bed frame and cleaning routine.
- Certifications: Look for CertiPUR-US or equivalent certifications for safety and low VOC emissions, especially for children’s rooms or RVs with enclosed spaces.
- Weight and installation: Heavier foams may require assistance or specialized tools to install within tight RV bunks or custom frames.
Frequently Asked Questions
- What does a 46 inch wide mattress fit best?
Best for compact beds, RV bunks, and custom frames where width is limited but length is flexible. - Are memory foam options suitable for RV use?
Yes, especially if paired with a breathable cover and proper ventilation to reduce heat retention. - Is a hybrid mattress better than pure foam for travel?
Hybrid mattresses offer a balance of contouring and support, but pure foam is lighter and easier to cut to fit irregular spaces. - Do these products come with covers?
Some do not; verify product details and plan for an appropriate cover or fabric wrap. - What thickness should I choose for a bunk or RV bed?
For bunks, 3″ to 4″ foams are common; for low-profile RV beds, 4″ to 6″ foam or a thin hybrid can provide better comfort. - Are these mattresses made in the USA?
Several options claim US-made materials or assembly; verify the specific product listing for confirmation.