What is a Box Spring?

June 3, 2020

A box spring (foundation) is a bed base with a wooden frame and either springs or metal rods that provide support to a mattress. The box spring is usually the same size as the mattress that sits on it. While the mattress provides support to the human body, the box spring ensures that the mattress itself is properly supported. It also absorbs shock and reduced wear on the mattress. This helps ensure your mattress maintains a long comfort life.

Box springs also raise the height of a mattress to make it easier to get in and out of bed. In a complete bed set, box springs are typically placed on top of a wooden or metal bed frame that's connected to the headboard and footboard. It's also common to see mattresses and box springs used together without a complete bed. Many sleepers who don't feel the need to have a decorative looking bed will place their box spring directly on the floor, or on casters that stand on the floor. Depending on what you need, there are different types of box springs.

Height Options

Over the last several years, advancements in sleep technology have resulted in mattresses that are a lot taller than they used to be. For this reason, many manufacturers produce low profile box springs. as well as ultra-low profile box springs.

The difference in height is completely aesthetic. There's no difference in the amount of support they provide to the mattress. Whether you use a standard or low profile box spring, you can count on your mattress getting the support it needs. 


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Standard Profile

Standard box springs measure 9 inches in height.

Tempurpedic standard charcoal box spring


Low Profile Box Spring

Low profile box springs measure between 5 and 5.5 inches in height.

Tempurpedic low profile charcoal box spring


Ultra Low Profile Box Spring

Ultra-low box springs measure 2 inches in height.

Tempurpedic ultra low profile charcoal box spring


Protect Your Warranty

Most manufacturers require that a mattress be supported by a box spring to file warranty claims. An exception to this is when a mattress lies on a platform bed or adjustable base. Since platform beds feature either wooden slats or a deck, the mattress doesn't need the extra support of a box spring.

If you're unsure if you should purchase a box spring with your mattress, or you have questions about a box spring you found on our site, give us a call. You can call 1-800-455-1052 to speak with a friendly mattress expert who'll be happy to assist you.


Find a Box Spring


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