ZINUS No Assembly Metal Box Spring / 5 Inch Mattress Foundation / Sturdy Metal Structure, Split King

(10 customer reviews)


Product details

Size Split King
Material Alloy Steel, Fabric
Product Dimensions 79″L x 76″W x 5″H
Color Beige
Included Components Metal Foundation, Cover
Brand Zinus
  • Sturdy Steel Frame With Poly Jacquard Cover
  • AS SIMPLE AS UNFOLD & UNWIND – Requiring no tools and zero tedious assembly, the innovative No Assembly box spring requires only unfolding to become bedtime ready; the hardest part will be taking it out of the box
  • DURABLY ENGINEERED – Durable steel is used to construct the interior framework of this reliable foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs; King size is a split version
  • LOW PROFILE DESIGN – A 5 inch height is perfect for taller mattresses or for those who enjoy their bed lower to the floor
  • THOUGHTFULLY PACKAGED – All parts and instructions are packed into one compact box that ships straight to your door
  • Worry-free 5 year limited warranty included; box spring only, a bed frame or platform bed is required to support this foundation and is sold separately


Believe it or not, we’ve made the box spring more functional, more durable, and dare we even say, fun! Our No Assembly Box Spring is not your average foundation. Its folding design not only makes set-up insanely easy, but it also comes in handy on moving day, maneuvering easily in and around tight hallways and corners. What’s more, it features a structure made of thick and durable steel, meaning that frames and mattresses may come and go, but this box spring will be with you for the long haul. Once unboxed, this brilliant foundation practically assembles itself by taking shape once unfolded. Essentially, deciding where to place the bed will take longer than setting up this box spring. Backed by both our 5-year worry free warranty and hundreds of positive customer reviews, this box spring is about as easy as decisions get.

Additional information

Weight 700 lbs
Dimensions 79 × 76 × 5 in

Split King


Alloy Steel Fabric



Included Components

Metal Foundation Cover



Furniture Finish

Alloy Steel

Assembly Required


Product Dimensions

79 x 76 x 5 inches, 79L x 76W x 5H

Item Weight

52.8 Pounds



Country of Origin


Item model number


Fabric Type

Sturdy Steel Frame With Poly Jacquard Cover

Form Factor

Bed Frame

Warranty Description

Worry-free 5 year limited warranty included.

Batteries Required




10 reviews for ZINUS No Assembly Metal Box Spring / 5 Inch Mattress Foundation / Sturdy Metal Structure, Split King

  1. D. Pin

    Super sturdy. Great form, quality and price. Real Review.The media could not be loaded.

     Having just moved as well and not able to bring my king boxspring or fit it into my room this was great.I hope to never move again but if I do, I know a big bulky box spring is not something I have to worry about, ever.I don’t know how other deliver drivers are or what people that are buying these… doing with these or on these things.I was skeptical as it’s a “pop up” version and the price seemed too good to be true. THIS BOXSPRING IS PERFECT!Owned it over 2 months. This includes 3 kids jumping on it, movie family nights= 5 humans over 90 lbs each. A couple who’s “adult activities” take place every day, more than once some days. And this has held up perfectly. The 5 inch was the sweet spot for us between 4 and 6 inches. He’s 6’1 I am 5’2 so his long legs have a nice relaxed bend when getting out of bed easily and I don’t have to jump out of bed.

  2. Milgroim

    Sturdy metal cage, but fabric cover is a piece of dreckMy Full 5″ was easy to unbox and unfold, but the cover came unzipped and partially off, and it was impossible to get it back on completely even with two people trying. After spending a long time gently but firmly trying to coax the cover over a corner edge, it ripped. Since the metal cage is sturdy and seems to be of good quality and the box spring can still do its job, I’m keeping it rather than returning it. I put a protective anti-bedbug cover on top of the ripped, unzippable box spring cover. I was planning to put on the protective outer cover anyway, as I always do that on box springs and mattresses, but now it’s concealing the crap ripped box spring cover rather than just serving its usual purpose. I’m disappointed that the box spring cover had no stretch at all and was so hard to deal with, and then it ripped. I definitely didn’t have an easy time like some other reviewers say they did. Zinus should use a better fabric cover with some stretch to improve the ease of use and overall quality of this product. The current cover is garbage.

  3. Ji Hyung Park

    Super easy.Almost no assemble is needed. Super easy and light but sturdy.Height is little low but I satisfied with this.

  4. Patricia M.

    This is the MOST wonderful productThis is the MOST wonderful product. So easy to install and high quality. Well worth the money.

  5. Shannon Hathaway -Licht

    Amazing to be able to unfold a box spring! Easy with good construction!Reasonably priced, easy to open and fold out. Not too heavy. What a wonderful concept and product.

  6. Nicole B.

    Easy, great quality, great priceVery easy to fold open. Seems very sturdy. Great price.

  7. Amazon Customer

    Easy to install !No assembly required!

  8. Amazon Customer

    The boxspring I wonderfulI liked it so much because it was easy

  9. heather miller

    Item never showed up and have t heard from sellersThey took my money and didn’t send item.

  10. Kelsie

    GREAT! –Only down side is I did not get the option to pick the case color, its grey and with my daughters bed it is visible, as she has black furniture and red sheets so the grey just throws it off. But as far as the intention for the product, it is a great “box spring” alternative and just the right height. No instructions came with mine, but I figured it out.

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