OSASET King 8-Inch Metal Box Spring

The OSASET King metal box spring is an 8-inch-high mattress foundation with a steel frame, removable fabric cover, and a claimed 3000 lb support capacity. It has no legs and requires a compatible bed frame or platform underneath, so it is not a standalone bed base.

At a glance

The 8-inch profile is intended to add mattress height without using a taller foundation.
The listing describes a steel frame and claims it supports up to 3000 lbs.
Its cover is described as removable using elastic bands for cleaning.
The included tools and instructions are intended to simplify assembly.

Price

$80.59Save 23%

Reference price: ~~$103.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

King sizing and stated dimensions provide a clear starting point for checking fit with a mattress and supporting base.
A removable cover is a practical feature for cleaning.
The listing says assembly tools are included, avoiding the need to source separate tools.

Cons

It has no legs, so it needs a separate bed frame or platform for support.
Customer feedback reports conflicting experiences with noise, durability, and stability.

Technical specifications

11 specifications

Dimensions and installation
Form factor	Box Spring
Size	King
Dimensions listed	80 x 75 x 8 inches
Legs	No

Construction and features
Frame material	quality grade of steel
Finish	Painted
Special feature	Squeak Resistant
Cover	high-quality fiber
Cover attachment	elastic bands

Capacity and assembly
Claimed support capacity	3000 lbs
Assembly tools	includes all necessary tools

What to know before buying

Listing details to confirm

The listing presents the height as 8 inches and gives dimensions of 80 x 75 x 8 inches, while its Q&A says a supporting bed frame or platform is required and the product has no legs. Check the actual fit and support arrangement for your bed. The 3000 lb capacity and noise-resistant performance are manufacturer claims, while customer feedback differs on creaking and durability. A product description says assembly can be completed in minutes, while its Q&A allows up to 30 minutes. Treat both as estimates rather than a guaranteed setup time.

Who is it for?

A good fit for

King mattress owners seeking an 8-inch metal foundation to use on a separate bed frame or platform.
Buyers who prefer a foundation with a removable cover for cleaning.

Less suited to

Anyone seeking a complete bed frame or a foundation with legs.
Buyers who need confirmed quiet operation or long-term durability, given mixed customer reports.

OSASET King 8-Inch Metal Box Spring · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.2 / 5 · 1,622 ratings

5 stars69%69%
4 stars10%10%
3 stars6%6%
2 stars3%3%
1 star12%12%

Customer feedback is favorable about assembly and fit for some buyers, including reports of easy setup with clear instructions. Experiences are mixed on size, noise, quality, and value, and some customers report early breakage or stability concerns. That variation matters for a foundation advertised with a 3000 lb capacity and a squeak-resistant design, since those are listing claims rather than assurance that every setup will perform the same way.

Positive themes

Some customers say assembly is easy and instructions are clear.
Some customers report that the foundation fits their needs, including with adjustable bed frames or in small apartments.

Negative themes

Some customers report breakage within three months.
Some customers report metallic creaking or stability concerns.

Mixed feedback

Customers disagree about whether it stays quiet, fits as expected, and offers satisfactory quality and value.

Frequently asked questions

Does this box spring include legs?

No. The listing says it is designed without legs and requires a basic metal bed frame or platform to support it.

What are its listed dimensions?

The technical details list 80 x 75 x 8 inches. Check those measurements against your mattress and supporting base before ordering.

Does it come with assembly tools?

The listing says tools and instructions are included, and gives an assembly estimate of up to 30 minutes in its Q&A.

Is the box spring guaranteed to be quiet?

No such guarantee is established. The listing describes it as squeak resistant, but customer feedback differs, with some reporting no squeaks and others mentioning metallic creaking.