Best Box Spring for Purple mattress?

Purple mattress foundation

Should you put your Purple Mattress on a box spring?

Purple mattresses are HEAVY. A queen size original, for example, is 100 lbs plus any additional weight (such as a partner, kids or pet). You need something with enough support so your mattress doesn’t develop sags.

Here’s what Purple mattress says you should put your mattress on:

The Purple Mattress will work great on any flat, sturdy foundation. Whether you put it on the Purple PowerBase or Platform, slats, box foundation, adjustable bed, or even the floor, your Purple Bed will sit pretty in any room. 

Why would you even want a box spring or what we use today, a foundation? It adds height and looks nice on your bed. Not having anything means a shorter bed. Also, our frame only has a cross section of wood – it’s not nearly strong enough to support the weight it needs to. We could add wood slats across the bed and then it would work, but we wanted the extra height and none of the extra work (our bed frame is not set up for slats).

There are links in this article to shop Purple mattresses and we highly recommend that you do (it’s still our top choice). We may earn a commission when you shop through our links.

Best box spring For Purple Mattress

Notice that the quote above DOES NOT SAY box springs. There’s no best box spring for a Purple mattress – in fact, you shouldn’t use one.

Why shouldn’t you use a box spring? Springs can break down over time and cause the mattress to sag. There are box spring alternatives – sometimes still called box springs, it’s technically a box foundation because there are no springs inside. If you get a platform bed the slats need to be 3″ apart or less.

Like this:

A platform bed from Wayfair with built in slats and a headboard

Read more about why you shouldn’t use box springs with your Purple mattress.

Using a box spring voids your warranty

Mattress warranties are mainly to cover mattress defects from manufacturing or shipping. Or if your mattress breaks down. You have to prove significant indents for almost any warranty. Companies don’t want to take back a used mattress. So we HIGHLY recommend that you use a mattress protector.

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Here’s a quote from the warranty:

Mattresses are covered by warranty only if they are used on a firm, flat, non-spring foundation (whether non-moving type or adjustable type) sufficiently strong to remain flat and firm under the weight of the mattress and its users, from the date of delivery onward to the date of the warranty claim without interruption; otherwise the warranty is void. Other placement (whether long or short term) of the mattress, including but not limited to foundations of other description, a storage facility in any orientation, or use of a non-sufficient frame beneath the foundation, voids this warranty.

A sufficient frame on which the foundation rests must provide sturdy support for both the mattress and foundation and in the case of a queen or larger must have 5 or more legs including a center support. Purple may require purchaser to provide proof of the sufficiency of the foundation and frame and of the constancy since purchase of the support of the mattress and foundation thereon before this warranty will apply. This warranty shall not apply if Purple determines in its reasonable discretion that the mattress or foundation has been damaged, abused, or neglected; it shall be reasonable without limitation to make such determination if the following are present: Tears, stains, odors, unsanitary conditions, folds, footprints, burns, cuts, or signs of jumping on the bed, rodents, insect damage or other infestation, damage from liquids or gels or blood or bodily fluids or other fluids, or damage from weather or sun exposure. Purple highly recommends the use of a very stretchy, breathable mattress protector because without such protection your mattress may not be clean enough or undamaged enough to have this warranty apply. Please note that a non-stretchy or non-breathable mattress protector (or non-stretchy tight sheets) will negate much of the benefit of the mattress. For the health and safety of anyone who would be required to dispose of, or otherwise handle, the sleep set, Purple and its retailers or agents may refuse to inspect such products to assess whether covered by the warranty, in which case, Purple reserves the right to deny warranty coverage. Photos may be requested to be sent via internet to Purple. Localized firmness changes are normal and are not covered under warranty. Comfort preferences are not covered under warranty. The mattress must be always covered in use or the warranty is void (UV light degrades cushioning materials).

Can you put a purple mattress on a box spring?

Yes, you can, but it’s not recommended and as we mentioned above, it voids the warranty. We have our Purple mattress on a box spring for years. But we didn’t have a warranty anyway (as our mattress was provided by the company).

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Purple Mattress- new foundation replaces the need for a box spring

So what are your choices if you can’t use a box spring and you want to buy something from Purple so you know it will adequately support your bed (especially on the much heavier hybrids)? Until now you had just two choices from Purple: a basic metal frame, or the Purple Powerbase adjustable base. That recently changed when Purple came out with the Purple foundation. Purple still doesn’t have a platform bed with a headboard – if that’s what you’re looking for we really like Wayfair.

7 Facts about the Purple foundation
  • The top layer is purple just like the top layer of your mattress
  • Holds up to 2,000 pounds
  • Won’t squeak
  • Stylish and neutral grey color looks good with almost any bedroom decor
  • Attachments for headboard and the foundation is 17″ from the ground.
  • Slipcover is removable so if it gets dirty, you can take it off and throw it in the wash
  • Easy set up

The Purple foundation isn’t white labeled from another manufacturer like most bed in a box foundations are. It’s made specifically for Purple mattress and to support the additional weight of even the heaviest hybrid (the Hybrid Premier 4 which weighs 204 lbs for a king size).

If you want to get it now and pay as you go, you can finance it through Purple for a low monthly payment.

Check Price on Purple Foundation