FoamRush 3-Inch Bunk High Density Foam RV Mattress Replacement

In this review the FoamRush 3-Inch Bunk high density foam mattress replacement is evaluated for use in RVs, campers, trailers and small beds where a slim, supportive pad is required. The bottom line: this 28 in x 75 in, medium-firm slab delivers reliable support and pressure relief for light sleepers or anyone needing a firmer surface without bulk. Its CertiPUR-US certified composition and a stated 44 ILD compression make it a practical choice for refreshing a worn-out bunk or sleeper surface at a modest cost.

Key Features

• High density construction: The foam is formulated to balance support and durability so it holds shape in high-traffic applications like RV bunks and camper beds.
• 44 ILD compression: A medium-firm compression rating provides noticeable pressure relief while preventing excessive sinkage for a stable sleeping surface.
• Versatile use: Sized at 28 in x 75 in, the pad fits many trailer, truck and camper bunks and can be used on platform frames, futons or hide-a-beds.
• Made in USA and certified: The foam is CertiPUR-US certified, which gives reassurance about materials and indoor safety compared with non-certified foam.
• Easy to customize: The slab can be trimmed, layered or glued to adjust thickness and fit, making it practical for DIY mattress projects.

Who It's For

The FoamRush 3-Inch Bunk is best for RV owners, weekend campers and van lifers who want a firmer, low-profile replacement mattress that restores support without rebuilding the bed platform. It's also well suited for upholsterers or crafters needing a consistent high-density piece for cushions or sofa repairs.

Those seeking a plush, pillow-top sleep surface or a full mattress replacement with a built-in cover and multiple comfort layers should look elsewhere; this product is a 3 in foam slab intended as a firm support layer rather than a thick, multi-layer mattress system.

Pros & Cons

Pros

• Firm, supportive feel that resists excessive compression while offering pressure relief for back and side sleepers.
• CertiPUR-US certification and US manufacture provide quality and safety reassurance.
• Simple to trim, stack or glue for custom projects and nonstandard bed sizes.
• Good value where a low-profile, durable replacement is needed for an RV or camper.

Cons

• No cover is included, so buyers must provide or sew a fitted cover for protection and comfort.
• At 3 in thickness, it may be too thin for sleepers who prefer a plush or deeply cushioned mattress experience.

Specifications

Size	28 in x 75 in
Thickness	3 in
Firmness / Compression (ILD)	44 ILD (medium firm)
Material	High density foam, CertiPUR-US certified
Intended use	RV, camper, trailer, truck bunk, sleeper sofa, cushions
Made in	USA
Cover	Not included

Our Verdict

The FoamRush 3-Inch Bunk is a sensible, value-focused option for anyone needing a firm, low-profile replacement mattress for an RV or camper. It provides dependable support, is easy to customize, and carries CertiPUR-US certification for peace of mind. Choose this if you need a durable, simple replacement layer; skip it if you want plush cushioning or an integrated cover.

Frequently Asked Questions

Will this foam fit standard RV bunk frames?
The 28 in x 75 in dimensions match many common bunk sizes, but measure your frame before ordering to ensure a correct fit.

Does the foam come with a cover?
No, the product is sold as the foam slab only; buyers should provide or make a cover for protection and comfort.

Can I trim or layer the foam?
Yes, the high density foam is easy to cut, trim and glue so you can stack layers or shape it for custom installations.