Mainstays 7" Twin High Profile Easy Assembly Smart Metal Box Spring, (Mattress & Bed Frame Not Included)
Mainstays 7" Twin High Profile Easy Assembly Smart Metal Box Spring, (Mattress & Bed Frame Not Included)
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Mainstays

Mainstays 7" Twin High Profile Easy Assembly Smart Metal Box Spring, (Mattress & Bed Frame Not Included)

|3,778 ratings
Mainstays 7" Twin High Profile Easy Assembly Smart Metal Box Spring, (Mattress & Bed Frame Not Included)MS 7 TMS 7 QMS 7 FMS 7 K
Bed SizeTwin

Key item features

    • Mainstays 7" Easy Assembly Smart Box Spring, Twin:

      • Sets up easily in seconds
      • An innovative design allows the box spring to easily fold up for storage and transport when not in use
      • Provides ultra-sturdy support for any innerspring, memory foam, or combination mattress
      • Features a 100% polyester jacquard cover
      • Constructed with a durable powder coated steel frame for a long life of reliable use
      • Easy to assemble with no tools required
      • Available in Twin, Twin XL, Full, Queen, King, and California King sizes
      • Twin and Twin XL can support up to 600 lbs. total weight capacity
      • Full, Queen, King, and California King can support up to 1200 lbs. total weight capacity
      • Mattresses and bed frames sold separately
      • Please see our assortment of mattresses

  • Mainstays 7" Easy Assembly Smart Box Spring, Full:

    • Sets up easily in seconds
    • An innovative design allows the box spring to easily fold up for storage and transport when not in use
    • Provides ultra-sturdy support for any innerspring, memory foam, or combination mattress
    • Features a 100% polyester jacquard cover
    • Constructed with a durable powder coated steel frame for a long life of reliable use
    • Easy to assemble with no tools required
    • Available in Twin, Twin XL, Full, Queen, King, and California King sizes
    • Twin and Twin XL can support up to 600 lbs. total weight capacity
    • Full, Queen, King, and California King can support up to 1200 lbs. total weight capacity
    • Mattresses and bed frames sold separately
    • Please see our assortment of mattresses
  • Sets up easily in seconds
Current price is $89.00
Price when purchased online
  • Free shipping
  • Free 90-day returns
Pro Furniture Assembly

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Packaging note:

Ships in the manufacturer's original packaging, which may reveal the contents.

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About this item

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Customer ratings & reviews

4.6 out of 5 stars
stars
3,778 ratings1,852 reviews
How item rating is calculated
  1. 5 stars81% (3,075)
  2. 4 stars8% (292)
  3. 3 stars3% (104)
  4. 2 stars2% (66)
  5. 1 star6% (241)
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
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Showing 1-3 of 1,852 reviews

Sep 14, 2025
Reviewer name: messybunmafia
Item details
Bed size: Queen
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Very easy to assemble, great design, extremely heavy duty and sturdy. This will also not be complicate to break down in the case of future moves. Cover can be removed for machine washing. It’s sort of like putting panty hose on an elephant if you’re working in a tight space/small bedroom, but worth it. It’s a secure/snug fit. No screws. No tools required.

Helpful?3S8X0JIVXRFK16286408540
Oct 1, 2025
Reviewer name: John
Top Reviewer
Item details
Bed size: Queen
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Excellent!

I've never seen this type of box spring before until I started looking for one for a bed in the guest room. Decided to take a chance and glad I did. Very easy to put together with no screws or bolts necessary. I had it together by myself and with the cover on in about 5 minutes.

Helpful?3S8X0JIVXRFK16286408540
Dec 24, 2025
Reviewer name: Jennifer
Item details
Bed size: Queen
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

different

My husband and I grew up with the wood box springs so this was very different for us. We're very surprised at of the quality and structure of the box springs. It was easy to put together and all those its made of metal it wasn't as heavy as the bed was. It came with a cover which is removable and washable which was another surprise too. I liked the height it made that bed easier to get in and out of.

Helpful?3S8X0JIVXRFK16286408540