Does it work with a memory foam mattress?

Yes. It is built to support innerspring, memory foam and combination mattresses.

Do I need tools to put it together?

No. Assembly requires no tools.

Can it be folded for storage?

Yes. The steel frame folds flat, which makes it easier to store or move.

It is 5 inches high, a low-profile foundation.

Does it replace a bed frame?

No. It is a mattress foundation and is meant to sit on a bed frame or slatted base.

What size mattress does it fit?

It is made for a Full-size mattress.

Where is the Mainstays 5 in Full Smart Metal Box Spring cheapest?

At Walmart, for $99.00, as of our latest check.

What do buyers say about the Mainstays 5 in Full Smart Metal Box Spring?

Rated 4.6 out of 5 from 4,120 ratings.

Mainstays 5 in Full Smart Metal Box Spring

Best price now

$99.00at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

Mainstays 5 in Full Smart Metal Box Spring

Best price now

$99.00at WalmartChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $99.00 at Walmart on Nov 12.

Our take on the Mainstays 5 in Full Smart Metal Box Spring

The Mainstays 5 in Full Smart Metal Box Spring is a low-profile steel foundation that gives a Full mattress a firm, even base. Its folding frame and tool-free assembly set it apart from traditional wood box springs, which are bulkier and harder to move. It suits guest rooms, platform-bed setups and anyone replacing a sagging old foundation. Reviewers rate it highly for easy setup and solid support, though some find the steel frame noisy or less sturdy than a rigid box spring.

Best forGuest rooms and spare bedsLow-profile bed setupsPlatform and metal bed framesRenters who move often

Pros

Folds flat for storage and moving
Assembles without tools
Works with innerspring, memory foam and hybrid mattresses
Low 5-inch profile keeps the bed height down
Steel frame supports the mattress evenly

Cons

Some owners report creaking or squeaking
Less rigid than a traditional wood box spring
Metal frame can shift on smooth floors
May need a bed frame or slats for full support

Mainstays 5 in Full Smart Metal Box Spring prices at every store

WalmartNew
In stock
$99.00Checked Nov 12
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What reviewers say

4.6 / 54,120 ratings

Owners rate it highly, mostly for quick tool-free assembly and a firm, even base. Complaints center on noise and a frame that feels less solid than a wood box spring.

What people mention

AssemblyPraisedOwners say it goes together quickly without tools.
NoiseCriticisedSome report creaking and squeaking once the mattress is on.
SturdinessMixedMany find it firm and supportive, but some say it feels less solid than a wood box spring.
StoragePraisedThe folding frame is easy to store and carry when not in use.
ProfilePraisedThe low height keeps the bed close to the floor, which suits platform setups.

About the Mainstays 5 in Full Smart Metal Box Spring

The Mainstays 5 in Full Smart Metal Box Spring is a low-profile mattress foundation for a Full-size mattress. It gives the mattress a supportive base and works with innerspring, memory foam, and combination mattresses.

The foundation has a steel frame and folds flat, so it is easier to store or move when not in use. Assembly requires no tools.

Bed size: Full
Color: White
Height: 5 in
Frame: Steel
Compatibility: Innerspring, memory foam, and combination mattresses
Assembly: No tools required
Storage: Folds flat

Specifications

bed_size: FullSource
color: WhiteSource

Questions and answers

Does it work with a memory foam mattress?: Yes. It is built to support innerspring, memory foam and combination mattresses.
Do I need tools to put it together?: No. Assembly requires no tools.
Can it be folded for storage?: Yes. The steel frame folds flat, which makes it easier to store or move.
How tall is it?: It is 5 inches high, a low-profile foundation.
Does it replace a bed frame?: No. It is a mattress foundation and is meant to sit on a bed frame or slatted base.
What size mattress does it fit?: It is made for a Full-size mattress.
Where is the Mainstays 5 in Full Smart Metal Box Spring cheapest?: At Walmart, for $99.00, as of our latest check.
What do buyers say about the Mainstays 5 in Full Smart Metal Box Spring?: Rated 4.6 out of 5 from 4,120 ratings.