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- 10-Year Accidental Stain Protection for your new mattress.
- Includes a breathable BedGard Mattress protector made with cotton blended terry.
- Sure Fit construction for mattresses up to 18” deep.
- 24/7 online Warranty Service.
- See terms and conditions for complete details.
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ZINUS Quick Lock Metal Smart Box Spring / 4 Inch Mattress Foundation / Strong Metal Structure / Easy Assembly, Queen White
Delivery & Support
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Purchase options and add-ons
- Steel Interior Frame With Steel Slats and a Poly Jacquard Cover
- HASSLE & HEADACHE FREE - The Quick Lock Metal Smart Box Spring comes together with easy-to-follow instructions, fewer bolts and absolutely no headaches; assembly that’s intuitive and packaging that seems to defy the laws of physics - now that’s what we call a new-age box spring
- DURABLY ENGINEERED - A durable steel frame is 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; Quick Snap assembly system makes set-up intuitive and stress-free
- 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
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- Highest ratedin this set of productsThis item:
ZINUS Quick Lock Metal Smart Box Spring / 4 Inch Mattress Foundation / Strong Metal Structure / Easy Assembly, Queen White
From the manufacturer
A New-Age Box Spring
Build It, Stress-Free
Our Quick Snap assembly process is much like it sounds - quick and yes, a snap to set up! Steel slats hold up beautifully to everyday use, and are easily secured to the structure by applying pressure, not screws. And voila! An ultra reliable foundation.
Handyman Skills Not Required
Ready in No Time
Simply unbox, assemble the framework and zip on the durable cover for years of unparalleled mattress support. All with just a friend's help and less than an hour of your time. Now that's what we call convenience.
Are any tools required to assemble my box spring?
This box spring is shipped with everything you need to assemble it - all parts, tools and instructions can be found efficiently packed in the shipping box.
Does this box spring require a bed frame?
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.
What kind of mattress can this box spring support?
Our box springs are designed to do it all! Rest your memory foam, latex or spring mattress on top for smooth snoozing.
What is the distance between slats?
For Twin and Full sizes, spacing is 3 inches. For Queen and King sizes, spacing is 2.9 inches.
Compare Zinus Box Springs
| | Assembly Required | |
| | Bed Frame Required | |
Steel | Frame Material | Steel |
4, 7.5, 9" | Available Profiles | 5, 7, 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 & 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" |
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Product Description
We like to think of the Quick Lock Metal Smart Box Spring as the 2.0 version of your traditional mattress foundation. Made sturdier than ever by its substantial steel frame and with its game-changing assembly method, we’ve developed a better way to deliver great sleep to your door. Created with closely spaced slats to accompany your latex, memory foam or spring mattress, this durable box spring comes in three different thicknesses so your bed can be as short or as tall as you like it. The Smart Box Spring features our fool-proof Quick Lock assembly system, meaning you spend less time screwing in bolts, and you get to be pleasantly surprised by how simply and quickly it comes together. You may even pat yourself on the back once you’re done (in fact, we encourage that). We’re so sure of this foundation (along with hundreds of happy customers) that it’s backed by a 5 year worry-free warranty, so you can sleep confidently for years to come.
Product information
| Product Dimensions | 79 x 59.5 x 4 inches |
|---|---|
| Item Weight | 48.4 pounds |
| Manufacturer | Zinus |
| ASIN | B071Z269FW |
| Country of Origin | China |
| Item model number | OLB-QLBS-4Q |
| Customer Reviews |
4.7 out of 5 stars |
| Best Sellers Rank | #20,568 in Home & Kitchen (See Top 100 in Home & Kitchen) #8 in Box Springs |
| Is Discontinued By Manufacturer | No |
| Fabric Type | Steel Interior Frame With Steel Slats and a Poly Jacquard Cover |
| Assembly required | Yes |
| Warranty Description | Worry-free 5 year limited warranty included. |
| Batteries required | No |
| Included Components | Box Spring, Instruction Sheet |
Warranty & Support
Feedback
Videos
Videos for this product

0:18
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ZINUS Metal Box Spring
Zinus, Inc
Videos for this product

1:08
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Is 4 Inches Tall Enough? ACTUALLY Quality & Easy Setup?
Teressa & Corey

Videos for this product

1:41
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How To Install The Zinus Quick Lock Metal Smart Box Spring
Jenna Glavan

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ZINUS No Assembly Box Spring hands on review
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Zinus Upholstered 4 Inch Box Spring
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Zinus Smart Metal Box Spring - Review!
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Zinus Metal Box Spring with Wood Slats - Review!
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Zinus 7 Inch Metal Smart Box Spring Review
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Compare with similar items
This item ZINUS Quick Lock Metal Smart Box Spring / 4 Inch Mattress Foundation / Strong Metal Structure / Easy Assembly, Queen White | Amazon Basics Smart Box Spring Polyester Bed Base, 7-Inch Mattress Foundation, Queen Size, White, Tool-Free Easy Assembly | Amazon Basics Smart Box Spring Bed Base, 9 Inch Mattress Foundation, Tool-Free Easy Assembly, Queen, White | Amazon Basics Smart Box Spring Bed Base, 5 Inch Mattress Foundation, Tool-Free Easy Assembly, Queen, White | ZINUS Metal Box Spring with Wood Slats, 4 Inch Mattress Foundation, Sturdy Steel Structure, Easy Assembly, Queen | Novilla Queen Box Spring, 4-Inch Metal Box Spring Supports for All Types of Mattress/Extra-Strong Support & Non-Slip, No Noise, Easy Assembly | |
|---|---|---|---|---|---|---|
| See Details | See Details | |||||
| Customer Rating | 4.7 out of 5 stars (8953) | 4.6 out of 5 stars (3655) | 4.5 out of 5 stars (9150) | 4.5 out of 5 stars (13447) | 4.6 out of 5 stars (13623) | 4.3 out of 5 stars (195) |
| Price | $169.00$169.00 | $139.00$139.00 | $105.64$105.64 | $103.78$103.78 | $149.00$149.00 | $150.16$150.16 |
| Shipping | FREE Shipping. Details | FREE Shipping. Details | FREE Shipping. Details | FREE Shipping. Details | FREE Shipping. Details | FREE Shipping. Details |
| Sold By | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Amazon.com | Amazon.com |
| Color | White | White | White | White | White, Black | Grey |
| Required Assembly | Yes | — | No | No | Yes | Yes |
| Item Dimensions | 79 x 59.5 x 4 inches | 79 x 7 x 59 inches | 79 x 59.5 x 9 inches | 79 x 59.5 x 5 inches | 79 x 59.5 x 4 inches | 79 x 59.5 x 4 inches |
| Material | Steel, Fabric | Polyester | Metal | Metal | Steel | Metal |
| Size Map | Queen | — | — | — | Queen | queen |
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonReviewed in the United States on June 15, 2023
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Top reviews
Top reviews from the United States
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We were new to the hybrid mattress requirement of not needing a regular box spring, so we decided to see if we could go lower. I read all the reviews for platform bed frames designed for a hybrid mattress. Many of these reviews, the ones made out of wood, complained about their platform bed frame not holding up, with their wood slats cracking, breaking, and making noise, legs breaking off, etc. We surely didn't want any of that plus we wanted to keep out headboard at the same time. Those reviews helped us decide on trying this metal box spring by Zinus. We selected the 4" thick choice for our king size bed cause we wanted the bed top lower. Let me tell you, we are 100% satisfied with the way it is constructed, the ease of putting it together, and the way our new 14" hybrid mattress fits on it. Everything fit like a glove. It doesnt make a sound if we get up or toss and turn, and the mattress stays in place.
Here are a few pictures we took as we put it together from start to finish. Before we put the new 4" metal box spring together, we removed those two 9" box springs we had to make room for the new metal one. It took us about 30-40 minutes to put the metal pieces together but it all went smooth. Everything fit nice and easy. The small rachet wrench that is included was a big help in tighting everything. And it only 16 screw bolts were required to fasten everything. Once finished, this new box spring fit right inside the original metal bed frame we had. The fabric cover went on next and fit over the top like a fitted bed sheet. Next we placed our new 14" mattress on top of everything and were very excited with our it fit the bed now. We actually had more mattress support when we laid on the bed. My husband and I were also now able to sit completely on each side of the bed with our feet on the floor. Having the top surface of the bed 5 inches lower on a metal frame strong enough also to support everything has made all the difference. We couldn't be more satisfied. If you have a king size hybrid mattress and want it lower to get on easier with plenty of support underneath this is the metal smart box spring to get.
UPDATE: 7 days later. Both of use are enjoying our new mattress very much, thanks to the 4" metal box frame. No moverment what so ever, solid as a rock. The lower height we now have has made all the difference. One thing I wanted to add if you order the king size box, is the box is heavy. My husband had to use a 2-wheel dolly to move it from the front door, through the house and into the rear bedroom. But once the box is open, all the pieces are marked and easy to connect.
Reviewed in the United States 🇺🇸 on June 15, 2023
We were new to the hybrid mattress requirement of not needing a regular box spring, so we decided to see if we could go lower. I read all the reviews for platform bed frames designed for a hybrid mattress. Many of these reviews, the ones made out of wood, complained about their platform bed frame not holding up, with their wood slats cracking, breaking, and making noise, legs breaking off, etc. We surely didn't want any of that plus we wanted to keep out headboard at the same time. Those reviews helped us decide on trying this metal box spring by Zinus. We selected the 4" thick choice for our king size bed cause we wanted the bed top lower. Let me tell you, we are 100% satisfied with the way it is constructed, the ease of putting it together, and the way our new 14" hybrid mattress fits on it. Everything fit like a glove. It doesnt make a sound if we get up or toss and turn, and the mattress stays in place.
Here are a few pictures we took as we put it together from start to finish. Before we put the new 4" metal box spring together, we removed those two 9" box springs we had to make room for the new metal one. It took us about 30-40 minutes to put the metal pieces together but it all went smooth. Everything fit nice and easy. The small rachet wrench that is included was a big help in tighting everything. And it only 16 screw bolts were required to fasten everything. Once finished, this new box spring fit right inside the original metal bed frame we had. The fabric cover went on next and fit over the top like a fitted bed sheet. Next we placed our new 14" mattress on top of everything and were very excited with our it fit the bed now. We actually had more mattress support when we laid on the bed. My husband and I were also now able to sit completely on each side of the bed with our feet on the floor. Having the top surface of the bed 5 inches lower on a metal frame strong enough also to support everything has made all the difference. We couldn't be more satisfied. If you have a king size hybrid mattress and want it lower to get on easier with plenty of support underneath this is the metal smart box spring to get.
UPDATE: 7 days later. Both of use are enjoying our new mattress very much, thanks to the 4" metal box frame. No moverment what so ever, solid as a rock. The lower height we now have has made all the difference. One thing I wanted to add if you order the king size box, is the box is heavy. My husband had to use a 2-wheel dolly to move it from the front door, through the house and into the rear bedroom. But once the box is open, all the pieces are marked and easy to connect.
Assembly was easy and pictorial instructions are clear (one miss is the slats have a notch that should face downwards and that is not visible in the instructions). The ratchet tool is a BIG plus; kudos to the manufacturer for this usability improvement. Normal rules apply: install all screws finger tight, THEN alternatey tighten them working around the assembly.
Others have complained they no longer use the complete zip on cover (now more of a fitted sheet thing) but that is a plus (air circulation and one less thing for my dog to chew on under the bed; others must spend a lot of time laying on the floor looking up under their bed?). There is a set of non-slip patches included for use on the bed frame but did not use them. Not clear how they would work given fabric of cover is between frame and foundation. Have not detected any noise/squeaks.
I want to mention in one of the posted videos the assembly was done incorrectly (Honest Box Spring Review by Bryson and Julianne). They install Item D UNDER the top bar of center support Item C. They must have severely bent Item D in order to do so. Apparently no one vets these videos.
Top reviews from other countries
Reviewed in Canada 🇨🇦 on June 15, 2023
Reviewed in Canada 🇨🇦 on March 17, 2023






































