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ZINUS Metal Box Spring with Wood Slats /4 Inch Mattress Foundation / Sturdy Steel Structure / Easy Assembly, King

  • Based on 15,015 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, May 21
Order within 3 hours and 32 minutes
Available payment plans shown during checkout

Size: King


Style: 4 Inch


Pattern Name: Smart Box Spring


Features

  • Steel Interior Frame With Wood Slats and a Knitted Polyester Cover
  • A MATTRESS GAME-CHANGER This box spring is built with all of the trusted support we put into our ever-so-popular platform beds, and this box spring has the total package - an unwavering steel structure, reliable, closely spaced wood slats and a cleverly developed, well, package
  • DURABLY ENGINEERED - Durable steel and wood slats are used to construct the interior framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs
  • LOW PROFILE DESIGN - A 4 inch height is perfect for taller mattresses or for those who enjoy their bed lower to the floor
  • THOUGHTFULLY PACKAGED - All parts, tools 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

Description

Chances are you’ve spent a long time picking out your ideal mattress. So why not put it on top of a foundation that will do it justice? The Metal Box Spring with wood slats is designed to steadily support your beloved mattress, be it spring, latex or memory foam. And with its proven solid steel structure and closely spaced wood slats, it’s a base you can sleep on with total confidence for the long haul. Created to fit in one package with everything you need and assembly that only takes a few steps to complete, this one is a slam-dunk in a box. Three different profile heights make it easy to choose the one that suits your setup, and its worry-free 5 year limited warranty means that we’ve got your back (literally and figuratively!).


Size: King


Material: Alloy Steel


Product Dimensions: 79"L x 75.5"W x 4"H


Style: 4 Inch


Color: White


Included Components: Foundation, Wood Slats, Cover


Brand: Zinus


Maximum Weight Recommendation: 700 Pounds


Item Weight: 58.86 Pounds


Furniture Finish: Wood slats


Assembly Required: Yes


Item Weight: 58.9 pounds


Manufacturer: Zinus


Country of Origin: China


Item model number: AZ-HBBS-4K


Is Discontinued By Manufacturer: No


Fabric Type: Steel Interior Frame With Wood Slats and a Knitted Polyester Cover


Form Factor: Box Spring


Warranty Description: Worry-free 5 year limited warranty included.


Batteries Required?: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great support-mattress foundation
Size: King Style: 7.5 Inch Pattern Name: Smart Box Spring
Old school "box spring" users relax, this is a great option. I had a steel framed with just a mattress which helped to convert my thinking. But, then a bed that required a foundation was desired. The first instinct was to drag one home from a local shop. So glad I didn't! Thiscame right to my door and has proved to be of better quality, lighter, easy to assemble (and will be if we have to move it as it is not one big structure that is a fixed form), love that you can remove cover to wash it when needed. I have stood on it to put curtains up and it stays stable. We have about 600 pounds on it a night with us and our big dogs and it is sturdy. Highly recommend. ... show more
Reviewed in the United States on January 4, 2023 by TinLusby

  • Modern mattress foundation
Size: King Style: 9 Inch Pattern Name: Smart Box Spring
It is a modern mattress foundation, not a "box spring". There are no springs in this item. For a king size, which I purchased, it's better than a two-piece box spring because it is level from side to side with no split frames running down the middle. This Zinus mattress foundation was relatively easy to assemble, it took me about an hour and I was in no hurry. It is aluminum with wood slats and when assembled properly is very sturdy. It is lightweight enough that one person can maneuver it (manufacturer recommends two people) but be sure you have adequate room and a plan to assemble and install it on your bedframe. The zip on cover is very nice. ... show more
Reviewed in the United States on January 3, 2023 by AvidReader

  • Easy, lightweight, perfect
Size: Twin Style: 7.5 Inch Pattern Name: Smart Box Spring
I can’t believe how easy this was to put together. I did it all by myself with no issues (I’m a petite woman so this doesn’t take a lot of strength to build). The package arrived un-damaged and everything inside was in perfect condition except for one metal bar that was bent. I simply took a pair of pliers and bent it back into place and everything was fine from then on. I believe I just got a defective one or else it was a returned item that got sent to me. I’m still giving it 5 stars based on how nice this item is and the ease of putting it together. Unfortunately, when I put it on my daughter’s bed, I realized it was the wrong height box spring. I received the 7.5 inch one and actually needed the 4 inch one. Amazon was super helpful with the return process and I now plan on ordering the 4 inch for both of the twin beds in my daughter’s bedroom. I would absolutely recommend this box spring over any others. Perfect for memory foam mattresses. Perfect overall. ... show more
Reviewed in the United States on December 4, 2022 by Brianne

  • Excellent box frame!
Size: Twin Style: 7.5 Inch Pattern Name: Smart Box Spring
This box frame is the bomb! So easy to put together, light enough to maneuver and the wood slats with the Velcro are genius! I couldn't be happier. Also, it comes with a zippered cover. Which will help keep it clean, however if you're into more of the industrial look you can skip the cover. I got a 6 inch very firm foam mattress and covered both the mattress and box frame with a 15- 24 inch extra deep pocket sheet. Fit perfectly and rather snug but that's okay, as the sheet helps keep the mattress and box frame together. Very happy with this product!! ... show more
Reviewed in the United States on December 24, 2022 by cacustomer

  • Nice low profile foundation
Size: Queen Style: 4 Inch Pattern Name: Smart Box Spring
Arrived with the box a little beat up, but everything was perfect inside. Assembled it by myself in about 20 minutes. Paid attention to the comments regarding being careful with the zipper for the cover and had no problem putting it on the frame. The boards come as two sets connected by Velcro, making installation a snap. No noise from this sturdy foundation. Replaced a 20 year old all metal foundation that had started to have issues with the metal creaking and deforming. Supports my mattress perfectly. ... show more
Reviewed in the United States on December 22, 2022 by Jim S.

  • Great!
Size: King Style: 4 Inch Pattern Name: Smart Box Spring
This thing is awesome. My wife and I had a very thick mattress, making getting into a bed difficult and awkward with a traditional box spring. This item came in one box, was easy to unfold and zip up, is very sturdy, and can be repacked the same way. It has helped us bring down the bed height significantly at only about half the size of a traditional box spring. ... show more
Reviewed in the United States on December 28, 2022 by J. Rudy

  • Easy to assemble
Size: Full Style: 4 Inch Pattern Name: Smart Box Spring
After reading a lot of reviews, I was a little concerned about the assembly, but once I lined up everything, it was really easy to put everything together. The only part little tricky was putting the cover on, but once you get it underneath, it is not that hard. Love the product.
Reviewed in the United States on January 4, 2023 by Marinda

  • Super easy to put together - just go slow and relax
Size: Queen Style: 7.5 Inch Pattern Name: Smart Box Spring
This is a great bottom base for my futon. it was very easy to put together. Directions easy and it is very well constructed. I can put together Ikea furniture so maybe I am just a Masters level kind of furniture putter together gal, but I was very pleased with the materials and how it was designed!
Reviewed in the United States on December 26, 2022 by Boston buyer

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