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ZINUS 4 Inch Box Spring with Cover, No Assembly Mattress Foundation, Sturdy Metal Structure, Queen, White

4.6 4.6 out of 5 stars 7,303 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
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Size: Queen
Pattern Name: Box Spring
Brand Zinus
Size Queen
Product Dimensions 79"L x 59.5"W x 4"Th
Top Style Tight Top
Cover Material Poly Jacquard
Number of Layers 1
Fill Material Steel
Weight Limit 700 Pounds
Special Feature Removable Cover
Color Grey
Item Weight
34.6 Pounds
Item Firmness Description
Firm
Age Range (Description)
Adult
Construction Type
Steel Frames

About this item

  • 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 and twin xl 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 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
› See more product details

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From the manufacturer

Zinus logo banner
No Assembly Metal Box Spring / 9 Inch White Mattress Foundation
available in 4, 7.5 and 9 inches profiles
Snaps into place like your wallet
boxspring steel frame

Strong, Stable and Sturdy

Built to Last

Interior steel framework adds premium strength, structure and longevity and requires no extra assembly.

quick assembly icon

Handyman Skills Not Required

Ready in No Time

If you can open a book, you can put together this one-and-done foundation in just a few minutes. A folding design makes set-up a snap and comes in handy when moving around tight corners and stairways.

  • No tools are required to assemble the BiFold box spring; that's the beauty of it! Set-up is as simple as unbox, unfold and unwind.

  • A basic metal bed frame or platform bed is required to support this box spring. Add your mattress, and you've got the dynamic trio for rock solid support.

  • Our box springs are designed to do it all! Rest your memory foam, latex or spring mattress on top for smooth snoozing.

  • Excluding the weight of the mattress, Twin and Twin XL sizes can support a maximum weight of 250 lbs. Full, Queen, King and California King sizes can support up to 500 lbs.

Bifold Box Spring(R)

Compare Zinus Box Springs

Assembly Required

Bed Frame Required

Steel

Frame Material

Stee

4, 7.5, 9"

Available Profiles

5, 7, 9"

Assembly Required

Bed Frame Required

Steel

Frame Material

Wood & Steel

4, 7.5, 9"

Available Profiles

4, 7.5, 9"

Assembly Required

Bed Frame Required

Steel

Frame Material

Steel

4, 7.5, 9"

Available Profiles

4, 7.5, 9"

Assembly Required

Bed Frame Required

Steel

Frame Material

Wood

4, 7.5, 9"

Available Profiles

4, 8"

From the brand

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ZINUS 4 Inch Box Spring with Cover, No Assembly Mattress Foundation, Sturdy Metal Structure, Queen, White

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Product Description

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.

Product guides and documents

Installation Manual (PDF)

Top Brand: Zinus

Highly Rated
100K+ customers rate items from this brand highly
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Customer reviews

4.6 out of 5 stars
7,303 global ratings

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Customers say

Customers find the mattress easy to assemble and set up. They appreciate its sturdy construction that ensures longevity. The firm mattress works well with it, providing the right height. It folds and unfolds for easy transport and storage.

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Ease of assemblyBuild qualityWorks wellFoldabilityHeightFitValue for moneyWeight
953 customers mention "Ease of assembly"918 positive35 negative

Customers find the mattress easy to assemble. It folds in half, making it convenient to transport and set up. They say it unfolds quickly, making bed assembly simple.

"...Flat bed, comfortable, slept well, easy set-up, easy to move in the future, and we're happy campers! I highly recommend this box spring." Read more

"...There is no assembly required other than unfolding it...." Read more

"...amount of height under our mattress and I love that it was so simple to install. Great product!" Read more

"...Assembly was easy, if a little awkward...." Read more

680 customers mention "Build quality"648 positive32 negative

Customers are satisfied with the mattress's build quality. They mention the metal frame provides a solid base, and the slim 4 inch height was just what they needed. The metal construction ensures longevity and the size and length fit bedframes. The mattress is firm and feels great when laying on it.

"...I believe these materials will last. It seems to be higher quality materials than the previous mattress box springs I had...." Read more

"...It looks sturdy and the perfect height for my platform bed...." Read more

"...It's quite rigid, acts more like a platform than a box spring, and works very well as a foundation for the memory foam mattress...." Read more

"Easy. Just unfold and zip. Solid buy light! Good support without adding a lot of height for my very thick mattress that weighs a lot." Read more

646 customers mention "Works well"636 positive10 negative

Customers find the product useful and sturdy. It serves its purpose well, with no sagging or problems. They are pleased with the quality and results. Some say it was the perfect solution when the original 9" box spring was too tall.

"...I expected to be screwing things together. Quality: Seems great! I believe these materials will last...." Read more

"...Great product!" Read more

"...rigid, acts more like a platform than a box spring, and works very well as a foundation for the memory foam mattress...." Read more

"...Just unfold it and put it on your bed frame. Very sturdy. I highly recommend!" Read more

277 customers mention "Foldability"272 positive5 negative

Customers appreciate the foldability of the mattress. They find it easy to remove from the box, fold and unfold for easy carrying, and it fits their queen bed frame perfectly. The unique folding/scissoring action makes it compact for transportation. Unpacking was simple, and the springs just folded out very easily.

"Easy. Just unfold and zip. Solid buy light! Good support without adding a lot of height for my very thick mattress that weighs a lot." Read more

"...Arrived in a box weighing 45 lbs. Just unfold, zip up, and lay flat. Good support and quality. Def recommend." Read more

"Solid product. Easy to set up and fold away...." Read more

"...It then was easy to remove bubble wrap and wrap tape with scissors...." Read more

266 customers mention "Height"249 positive17 negative

Customers find the height of the mattress suitable for their needs. They say it reduces the bed's height to just what they wanted, making the bed more comfortable. The low profile box spring is great for modern decor and allows easy access to the mattress. It's also flatter than normal and half the length, making it easy to carry and set up.

"...but this made a difference. My wife and I could tell immediately. Flat bed, comfortable, slept well, easy set-up, easy to move in the future, and we..." Read more

"...It looks sturdy and the perfect height for my platform bed...." Read more

"Added the perfect amount of height under our mattress and I love that it was so simple to install. Great product!" Read more

"...Arrived in a box weighing 45 lbs. Just unfold, zip up, and lay flat. Good support and quality. Def recommend." Read more

245 customers mention "Fit"187 positive58 negative

Customers like the fit of the mattress. They say it fits well into their full-size bed frame and aligns with the mattress. The sheet covers everything nicely, making it look like one piece. It's portable and fits their budget.

"...It fit perfectly and left about an inch for the hoses to be reattached to my sleep number matter. I was a little worried about that...." Read more

"The box spring fit our loft bed perfectly. The Bed is now much better at obtaining quality sleep." Read more

"...ensures longevity, size and length fit bedframe and align with mattress ; to me, some small but important negatives, metal bar runs horizontally in..." Read more

"...today and I was SOOOO upset because I opened the box, each side measured only ONE inch!!..." Read more

240 customers mention "Value for money"219 positive21 negative

Customers like the mattress' value for money. They say it shipped fast and is worth the price.

"...I’ve previously bought one that I had to assemble. But worth the extra 40 bucks to have it come already pre assembled...." Read more

"Comfortable great value for the money" Read more

"...its worth the money, easily to assemble, sturdy, and love that it folds!!!! which will come in handy whenever i move to take up less space" Read more

"...Had thought about getting a new bed, but this is much less expensive. I thought it was a quad fold, turns out to be half fold...." Read more

218 customers mention "Weight"183 positive35 negative

Customers appreciate the mattress' lightweight design. They find it easy to transport in a compact car and up stairs. The folding mechanism makes it simple to carry to their room, assemble, and put on their bed. The low profile is suitable for modern thick mattresses.

"...of thought seems to have gone into how to make the package the smallest possible size, simple to move, simple to use, and overall well protected...." Read more

"...The new combination is light enough that I can easily lift it to adjust the slats if they start to slip out of place...." Read more

"Easy. Just unfold and zip. Solid buy light! Good support without adding a lot of height for my very thick mattress that weighs a lot." Read more

"...It would be very easy to take with you in a move. This is not a "Box of Springs" - there are no springs inside...." Read more

Great box spring
5 out of 5 stars
Great box spring
Added the perfect amount of height under our mattress and I love that it was so simple to install. Great product!
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Top reviews from the United States

  • J. Taillon
    5.0 out of 5 stars Box springs matter - and this one is awesome!
    Reviewed in the United States on December 20, 2016
    Size: Split California KingPattern Name: Box SpringVerified Purchase
    I just spent my first evening sleeping on this box spring. I want to provide a review because I am so impressed.

    First, this is a good that is well packaged. A lot of thought seems to have gone into how to make the package the smallest possible size, simple to move, simple to use, and overall well protected. I imagine that if someone believes they will move often then this is the absolute perfect box spring.

    I would like to contrast this with my previous "luxury" box spring. I have a California King bed. I purchased it through Hilton's Employee Program and used the box springs for 10 years. The box springs were nice, but large and nearly impossible to move effectively. When I moved internationally and then back to the USA this was a huge hassle. This Zinus 4-inch box spring set (approximately 1/2 the size/height of my previous "luxury" box spring) would be so much simpler to move. I would also like to point out that due to it being only 4 inches, my bed looks "normal" again instead of being slightly over 4 feet tall and difficult to get in/out of.

    Okay, so when the box is open the Zinus box spring is simple to set up. As in, under 30 seconds/ea. This was awesome. I expected to be screwing things together.

    Quality: Seems great! I believe these materials will last. It seems to be higher quality materials than the previous mattress box springs I had.

    Sleep: I slept so well last night! Big change from the previous box spring. I honestly thought box springs were not that big of a deal - it's about the mattress, right? - but this made a difference. My wife and I could tell immediately. Flat bed, comfortable, slept well, easy set-up, easy to move in the future, and we're happy campers! I highly recommend this box spring.
    49 people found this helpful
    Helpful
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  • carol
    5.0 out of 5 stars Excellent product, works well, easy set up.
    Reviewed in the United States on February 15, 2017
    Size: QueenPattern Name: Box SpringVerified Purchase
    I am a 56 year old woman and I was able to set this up all by myself. It was definitely a bit awkward and heavy-ish. It was not the easiest thing to do without a second person helping, but it is doable. The whole process (from box to finished with bedspread back on the bed) was about 20 minutes.

    There's nothing to it in terms of set up, other than the awkwardness of wrestling it out of the carton (it's kind of heavy), getting your mattress off the bed by yourself, wrestling the box spring onto the bed by yourself and then putting your mattress back on top by yourself. Once you get it out of the carton and you unfold it, the box spring "springs" to life. There is no assembly required other than unfolding it.

    It is for a guest bedroom so I haven't had any reports yet from guests sleeping on it. It looks sturdy and the perfect height for my platform bed. It has a much more inviting look now and will be easier for older guests to get in and out of the bed now. I didn't want a full height box spring because that would have been too high. This is perfect.

    I compared this against the least expensive Queen box spring I could have gotten delivered from a local mattress store and I saved over $100.00 overall (once you figure in $59 for white glove delivery, sales tax and the higher price for the box spring). I am very pleased with the purchase! The pictures I have attached show the process from box to finished bed. You can also compare how low my bed looked before versus how nicely elevated it is after adding the box spring.
    Customer image
    carol
    5.0 out of 5 stars
    Excellent product, works well, easy set up.

    Reviewed in the United States on February 15, 2017
    I am a 56 year old woman and I was able to set this up all by myself. It was definitely a bit awkward and heavy-ish. It was not the easiest thing to do without a second person helping, but it is doable. The whole process (from box to finished with bedspread back on the bed) was about 20 minutes.

    There's nothing to it in terms of set up, other than the awkwardness of wrestling it out of the carton (it's kind of heavy), getting your mattress off the bed by yourself, wrestling the box spring onto the bed by yourself and then putting your mattress back on top by yourself. Once you get it out of the carton and you unfold it, the box spring "springs" to life. There is no assembly required other than unfolding it.

    It is for a guest bedroom so I haven't had any reports yet from guests sleeping on it. It looks sturdy and the perfect height for my platform bed. It has a much more inviting look now and will be easier for older guests to get in and out of the bed now. I didn't want a full height box spring because that would have been too high. This is perfect.

    I compared this against the least expensive Queen box spring I could have gotten delivered from a local mattress store and I saved over $100.00 overall (once you figure in $59 for white glove delivery, sales tax and the higher price for the box spring). I am very pleased with the purchase! The pictures I have attached show the process from box to finished bed. You can also compare how low my bed looked before versus how nicely elevated it is after adding the box spring.
    Images in this review
    Customer imageCustomer imageCustomer imageCustomer imageCustomer imageCustomer image
    442 people found this helpful
    Helpful
     Report
  • Josie
    5.0 out of 5 stars Great box spring
    Reviewed in the United States on February 3, 2025
    Size: Split KingPattern Name: Box SpringVerified Purchase
    Added the perfect amount of height under our mattress and I love that it was so simple to install. Great product!
    Customer image
    Josie
    5.0 out of 5 stars
    Great box spring

    Reviewed in the United States on February 3, 2025
    Added the perfect amount of height under our mattress and I love that it was so simple to install. Great product!
    Images in this review
    Customer image
    Helpful
     Report
  • Tami Morse
    5.0 out of 5 stars Great for a wood slat frame bed
    Reviewed in the United States on December 19, 2021
    Size: FullPattern Name: Box SpringVerified Purchase
    I bought the Zinus metal box spring, along with a memory foam bed-in-a-box mattress, to replace a traditional mattress and box spring on an old wood-frame full size slat bed. The traditional set was much, much too heavy for the wood frame, and the side rails were starting to warp, the slats falling out frequently. The Zinus has actually stabilized the bed frame so I don't have those issues any more! It's quite rigid, acts more like a platform than a box spring, and works very well as a foundation for the memory foam mattress. The new combination is light enough that I can easily lift it to adjust the slats if they start to slip out of place.

    Assembly was easy, if a little awkward. I was doing this by myself, in a small room, so it took some maneuvering to get the Zinus out of its box, unfolded, flipped over, and set on the bed frame (when you unfold it out of the box, it ends up bottom up.) Really not difficult at all.

    I find the new configuration very comfortable; I've slept on it every night for about two months. The Zinus is quite rigid, as I said, but the memory foam mattress has enough "give" in it so I don't notice it. I haven't had any problems with the Zinus squeaking, and I checked after a month or so and didn't see any wires or metal pieces coming out of the cover or damaging my mattress. Absolutely perfect for what I needed.
    16 people found this helpful
    Helpful
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  • Suesieq
    4.0 out of 5 stars Easy solid and light for good support
    Reviewed in the United States on January 1, 2025
    Size: QueenPattern Name: Box SpringVerified Purchase
    Easy. Just unfold and zip. Solid buy light! Good support without adding a lot of height for my very thick mattress that weighs a lot.
    Helpful
     Report

Top reviews from other countries

  • Judy Rocha
    5.0 out of 5 stars Easy, affordable, sturdy!
    Reviewed in Canada on October 18, 2019
    Size: QueenPattern Name: Box SpringVerified Purchase
    Excellent product. Easy to assemble and easy to manoeuvre up the stairs. Remember to unzip the zipper all the way and follow instructions. We ordered a queen size and it worked like a dream! Used for queen sized bed. Highly recommend this product!
    Report
  • Julia G.
    5.0 out of 5 stars Easy
    Reviewed in Canada on December 26, 2019
    Size: TwinPattern Name: Box SpringVerified Purchase
    Incredibly easy to assemble/unfold. Perfect to get up to my apartment and tight room. No need to tell pivot to get around corners. I haven't run into any issues. It seems sturdy and is a great base to my firm memory foam mattress
    Report
  • DancingD
    5.0 out of 5 stars Sturdy, quick, thin and does the job
    Reviewed in Canada on December 2, 2019
    Size: QueenPattern Name: Box SpringVerified Purchase
    I was getting operated and needed something fast. It was the only box spring that was 4 inches high and I needed to lower my bed. Ordered it , received in a few days and assembled in a few minutes by my 80 yr old mom and hubby. It’s sturdy and fantastic
    Report
  • Amazon Customer
    4.0 out of 5 stars Very easy to assemble
    Reviewed in Canada on July 6, 2021
    Size: QueenPattern Name: Box SpringVerified Purchase
    Very easy to assemble. Sturdy so far.
    Report
  • Dan A.
    5.0 out of 5 stars The perfect box spring mattress
    Reviewed in Canada on December 29, 2024
    Size: QueenPattern Name: Box SpringVerified Purchase
    The foldable design was excellent and the 4 inch height was the optimal for my bed frame and mattress. Very good quality as well
    Report