

🛏️ Build your bed’s best friend in minutes—strong, silent, and sleek.
The Zinus 7 Inch King Metal Smart Box Spring combines a durable steel frame with innovative tool-free assembly, supporting mattresses up to 700 lbs. Designed for quick setup and whisper-quiet stability, it ships compactly with a 5-year limited warranty, making it the perfect foundation for a restful, hassle-free sleep experience.









| ASIN | B09XM6BPL1 |
| Assembly Instructions Description | 1. Unpack the box and lay out all parts. 2. Attach the tool-free locking brackets to the frame. 3. Connect the parts as per the step-by-step instructions. 4. Ensure all connections are secure. 5. Your box spring is now ready for use. |
| Assembly Required | Yes |
| Best Sellers Rank | #28,203 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #22 in Box Springs |
| Brand | Zinus |
| Color | Grey |
| Compatible With Mattress Size | King |
| Customer Reviews | 4.3 4.3 out of 5 stars (16,052) |
| Date First Available | April 11, 2022 |
| Finish Type | Steel |
| Form Factor | 7 inch box spring |
| Furniture Finish | Alloy Steel |
| Global Trade Identification Number | 00841550325362 |
| Ground To Item Distance | 7 Inches |
| Headboard Material | Fabric |
| Included Components | Steel Frame, Cover |
| Item Weight | 44.1 pounds |
| Item model number | ZU-ABS-7KS |
| Manufacturer | Zinus |
| Product Care Instructions | Wipe with Dry Cloth |
| Product Dimensions | 78.7"L x 75.5"W x 7"H |
| Size | King |
| Special Feature | Durable |
| UPC | 841550325362 |
A**3
Very sturdy and surprisingly quiet
I’m honestly impressed with this foundation. I bought the king size and was expecting it to be heavy and complicated, but it was actually very easy to put together. The frame feels solid once it’s assembled, and it doesn’t wobble or shift when you get in and out of bed. What I like the most is that it makes absolutely no noise. No squeaks, no movement sounds at all. The support is firm in a good way, and the surface feels steady under the mattress. It also doesn’t weigh as much as I expected, so moving it around wasn’t a problem. Overall, it looks clean, feels durable, and holds the mattress perfectly without sliding. The height is perfect to match the regular bed headboard. (4 " works )Great buy.
V**Y
Strong and yet affordable
Had never heard of a box spring that is not made from wood. At first, I was skeptical to order a box spring from steel. My skepticism then got slightly worse when I read some negative reviews about "OHM, it takes too long to assemble!" Being an engineer and an optimist upon reading majority of great reviews, I went ahead and placed an order for queen box spring. Not only it arrived in time but it was also well-packed. It is heavy and you will need 2 people to carry the box from outside to your bedroom. Once I unopened the box, I was surprised to find the individual pieces tied up in groups based where they all go. Every single piece is numbered and lettered. A piece numbered "1" connects to another piece numbered "1", numbered "2" connects with another numbered "2". Very simple and easy. The kit also comes with tools. The part breakdown is as per below: A (inner long rail) = 2 B (inner short rail) = 1 C (outer short rail) = 2 D (outer long rail-1) = 2 E (outer long rail-2) = 2 F (Slats) = 10 S (shortest screws) = 8 M (mid-length screws) = 4 L (long screws) = 2 H (nuts) = 10 The best advice is that open the box, remove the cable ties, lay out all parts on floor as per the intended connection and get an idea of who connects to who (without actually assembling). It is otherwise called a "raw" or a "draft" assembly". Once it is done, it takes 30 minutes MAX to connect all components. I then put the cover on it and zipped it up. Voila, it was now ready to be placed on the bed. The moment of truth was moments away. My daughter and I lifted it up and placed it on her queen bed. It fit perfectly. We then put the mattress and lied down on it. It is very sturdy and does not squeak upon rolling. Overall, it is very strong and affordable. Here is the best part. It can be unassembled and moved to another place much easily (than the traditional wood box spring). I highly recommend it. Buy it with full confidence!
S**H
Straightforward assembly, solid once together
After putting this boxspring together, I don't think I'll ever purchase a pre-assembled one ever again! Assembly was pretty easy, and the box has everything you need, including an allen wrench and a small ratchet. The instructions were specific about what order to do things in, but I just laid the parts out on my floor in their correct position, and snapped them together as I worked my way around. The powdercoating on the pieces feels high quality, and I did not notice a single sharp edge or corner. The pieces are all light but quite sturdy. I wanted a solid surface for a memory foam bed, and this seems to fit the bill. Something that worried me a little was whether the metal pieces would clank against each other when everything was assembled, but I think it'll be nice and quiet. The only place that metal could touch metal, there's a thin foam pad to prevent noise. At first I thought the cover was slightly undersized, but after getting all of the corners on, the material on the edges curves up over the top just a little on each side. It looks very nice once the mattress is in place. The ease of breaking this down to move it is a huge selling point. I don't plan on moving again in my life, but a large boxspring is a PAIN to move up and down stairs. This breaks down into a small enough package that you could easily move it up a spiral staircase. I would definitely recommend this to anyone who wants a sturdy base for their mattress, and especially to someone who has a tight pathway to their bedroom.
D**L
We have three of these mattress foundations at our cottage and they are great! Fairly easy to put together once you figure out the numbering system. Of course, constructing foundation numbers 2 and 3 was way easier to do once number 1 was done and the numbering system was clear to me. The foundation feels solid and there are no squeaky bits as you move around in the bed. Would buy again.
V**N
Super easy to put together, thank you.
S**O
esta muy chica de ancho mi colchon es individual y esta mas grande que esto pero de ahi en fuera facil de armar y no es muy caro
N**A
easy to assemble, great for the price
B**K
My husband and I were super hesitant to get these at first even though there were so many great reviews. They arrived quickly and were extremely well packaged. The price was good too. We purchased 2 twin xLs for our king bed instead of the king version. Worked perfectly! Super super easy to put together. Super easy to put the fabric cover on and zip it up (don’t know why others have complained about that part). Have had about a month now and no problems at all. Will highly recommend this to anyone looking for an alternative to the old fashioned box springs. Wish I had this when I lived in a century old house years ago when I couldn’t get a queen box spring up the stairs. This sure woulda been handy to have back then. Judging by the way the pieces came packaged and the detailed items (stationary/thank you cards) in the box, it looks like this company really cares. Wouldn’t hesitate to purchase again from them in future.
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