

🛏️ Sleep Strong, Assemble Fast, Live Elevated!
The ZINUS 7 Inch Metal Smart Box Spring is a king-size mattress foundation built with a robust steel frame supporting up to 700 lbs. Designed for quick assembly in under 7 minutes, it features a sleek poly jacquard cover and a noise-free structure that enhances mattress longevity and sleep quality. Backed by a 5-year warranty, it combines durability, style, and convenience for the modern bedroom.











| ASIN | B01NANZ5JB |
| Assembly Instructions Description | Assembly instructions included |
| Assembly Required | Yes |
| Best Sellers Rank | #16,001 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #11 in Box Springs |
| Brand | Zinus |
| Color | White |
| Compatible With Mattress Size | King |
| Customer Reviews | 4.3 4.3 out of 5 stars (16,029) |
| Date First Available | December 29, 2016 |
| Finish Type | Steel |
| Form Factor | Metal box spring with a 7-inch height |
| Furniture Finish | Alloy Steel |
| Global Trade Identification Number | 00841550100136 |
| Ground To Item Distance | 7 Inches |
| Headboard Material | Steel |
| Included Components | Foundation, Cover |
| Is Discontinued By Manufacturer | No |
| Item Weight | 47 pounds |
| Item model number | OLB-ABS-7K |
| Manufacturer | Zinus |
| Product Care Instructions | Wipe with Dry Cloth |
| Product Dimensions | 79"L x 76"W x 7"H |
| Size | King |
| Special Feature | Durable |
| UPC | 841550100136 |
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!
M**I
Effortless Assembly and Rock-Solid Support – A Huge Improvement Over Older Models
I’m really impressed with how far assemble-at-home box springs have come. I bought this California King size box spring and couldn’t be happier with the experience. Setup was incredibly easy—everything fit together perfectly, and I had it fully assembled in under 30 minutes without any frustration. It feels solid and well-built, offering great support for the mattress. The last time I assembled a box spring at home was back in 2018, and that one was a struggle from start to finish. This one was the complete opposite—quick, intuitive, and sturdy. Highly recommend if you're looking for a hassle-free option that doesn't compromise on quality.
B**U
Good Value Modifications Recommended
The Positives: -It was pretty simple to assemble (or would have been see cons). Just 6 screws. Straightforward instructions. Minimal parts to connect. -It feels solid with two adults and a child in it. -Not Noisy so far. Silent in fact. I was concerned about it being noisy so I added electrical tape at all metal to metal contact points. Particularly the end of the cross braces. This made things fit tighter and there shouldn't be any metal rubbing together now. Can't say this made the difference but it is quiet. -Price. Local retailers were quoting me 2-3 hundred for a traditional box spring. Apparently they aren't commonly used anymore which is the reason stated for the high prices. -The cover was easy to fit. It's basically just a fitted bed sheet. Cons: -No surprise, the metal is the typical cheap Chinese pot metal. -The machining for one of 6 screw holes was missing most of it's threads. This made it impossible to assemble using the screws provided. Thankfully I had a box of nuts and bolts and was able to complete the assembly without the screw. -Two of the cross braces didn't have the plastic grommet in the end of them. This would have meant extra metal to metal contact. I remedied this by fashioning my own grommet out of furniture foot pads. I shouldn't have needed to do this but I'm sure it will work better now anyway. Tip: Use electrical tape at all metal to metal contact points to avoid noisy metal to metal friction. This was at the end of cross braces and then the center contact point where 4 screws are connected. Summary: It was a very cheap solution that seems to solve the problem. If you don't have a little Macgyver ability you might want to avoid this. The quality of the material and machining matches the price. Ease of assembly with simple instructions is a plus. Will update if the thing falls apart. Update 9/25/25: Still holding up. Haven't had to tighten anything and it's still quiet. Keep in mind though that this is being used for a childs bed but Mom and Dad do spend a fair amount of time getting in and out of it.
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.
N**A
easy to assemble, great for the price
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
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.
S**R
Went together like a charm , exactly what we were looking for
Trustpilot
1 month ago
5 days ago