What is a Box Spring?

January 8, 2020

An image of a box spring

Supporting the Mattress

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 place their box spring directly on the floor, or on casters that stand on the floor.

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. They provide the same amount of support as standard box springs but are shorter to reduce the height of the sleep set. Standard box springs measure 9 inches in height, and low profile box springs measure between 5 and 5.5 inches. The difference in height between the two is completely aesthetic. There's no difference in the amount of support they provide to a mattress. Whether you use a standard or low profile box spring, you can count on your mattress getting the support it needs.

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.