






🛏️ Elevate your sleep game with steel-strong support that locks in comfort fast!
The Zinus King Quick Lock Bunkie Board is a slim, durable steel foundation designed to replace box springs or bed slats. Featuring quick lock construction, it assembles rapidly without tools and fits perfectly with Zinus Compack frames. Its 5.1-inch spaced steel slats provide robust support for spring, hybrid, and memory foam mattresses, ensuring enhanced mattress longevity and comfort. Compactly packaged for easy transport, it comes with a 5-year limited warranty, making it a reliable upgrade for any king-size bed frame.






| Best Sellers Rank | #83,794 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #387 in Bed Frames |
| Brand | Zinus |
| Color | Black |
| Customer Reviews | 4.5 out of 5 stars 14,577 Reviews |
| Material | Alloy Steel |
| Product Dimensions | 79"L x 75.5"W x 1.6"Th |
| Size | King |
| Style | Board |
B**N
Great quality and very strong.
Very great quality steel very strong. Easy to put together and install. Worked great to lower the mattress down.
J**R
Excellent quality, easy to install. Best Amazon purchase ever!
This was one of the best purchases that I have ever made on Amazon. I had wooden bed slats that were constantly slipping off and so I would have to pull them back to be on top of the metal ridge supporting them. Making things worse is that I have a bedjet powerlayer adjustable bed frame on top, so that was no easy feat. But this bunkie board totally solved my problems here. Assembly was super simple and the rubberized connections make the bed super quiet. It feels very supportive. The hardest thing to do was to lift off and on my powerlayer but that that is no fault of the bunkie board. The only caution I have is to make sure your ridge or whatever this will sit is wide enough and your measurements are correct. The board just sits flush on the inner edges of the ridges in my case but it’s important to that the right width here. Anyway the quality and durability of this board seems outstanding after months of use. I would recommend this 100% for anyone needing slat replacement or wanting a more solid foundation to a frame.
K**R
Still need bed slats ...
This fit the two antique bed frames (double/full size beds) we purchased them for, really well from head to foot. The width is slightly less than the ledge the bed slats sit on, so we kept the bed slats, and placed the bunkie board on the slats. It works as a box spring replacement perfectly well. The beds we have are antiques, and the slats kept getting spit out, usually around midnight, and dumping the poor sleeper onto the floor with a loud BANG! Discovering that the slats had shrunk in our dry climate (Colorado) and the head board 'leg' was loose causing a slow, creeping, bow legged effect which drifted the side rail outward as the weight on the mattress pushed down/outward and the slats suddenly lost purchase. We remedied this by screwing the slats to the frame-ledge before adding the bunkie board. The bunkie boards are sturdy, don't rattle and now that we've screwed the loose parts down, everyone sleeps through the night without 'sudden relocation'. Assembly is easy. The second box arrived looking like it'd been through a shredder, and it wasn't until assembling the parts that I found some mangled corners. but I was able to bend the two mangled corners back into place with a pair of simple pliers (I'm a 60 yr old woman, so we're not talking about a beefy welding wizard here). My hubby was supposed to help, but he was on a business trip with the second one arrived, so I huffed and puffed the assembly solo. The instructions are blessedly simple and it doesn't take long at all. And the huffing and puffing was due to manhandling the mattress onto the bed by myself. The bunkie board I simply assembled on top of the bed slats - no lifting required, and the room was too small to do it anywhere else. Just watch your feet going between the slats carefully so you don't embarrass yourself (not that anyone would trip over a bed slat, like, umm, I might have ...)
M**L
Width a tad short but otherwise perfect for my needs
I have one of those fabric bed frames with fabric headboard. Its really beautiful. However the boarder frame on the inside that goes around the inside of the bed where u put the slats down is wood. I've had 2 of these bed frame beds and both had wood slats. One came with a ton of slats and the other came with only 4. The wood slats broke on the first bed, they arent very good for these beds in my opinion. Not strong and sturdy wood slats at all. But my point is this product is a perfect solution. I ended up throwing out the frame on the bed that broke because where the breaks were it couldnt be salvaged. I didnt want that to happen with bed number 2. I put the frame together and the 4 weak slats. Then this product came to mind. My first bed was a regular mattress and I guess the wood slats replace box spring so I didnt have box spring. The mattress was older and everyone in my house had a memory foam mattress so I finally upgraded. I have a queen frame and queen mattress. Not only was I worried these weak wood slats wood break again but my mattress was sinking between the slats. Everything felt like a horrible nightmare bedtime wise. This product saved me. It was completely simple and quick to put together. You simply attach each side together to form the rectangle board frame. All hardware and tools are included. Only took a few minutes to do. Then you just snap all the slats in. The just push down into all the little openings, you dont even have to mess with twisting and turning more screws. I hate putting furniture together but this was a simple fast easy breeze. I laid this board right over the wood slats and it damn near was a perfect fit. The length is perfect fit for a queen bed. I gave 4 stars and would have gave 5 stars but I found one issue. Now this holds my mattress up where its supposed to be, no more sinking and unevenness. The bed supports it well, everything is strong and sturdy. 4 stars instead of 5 is due to the width. Its a little short but not by much at all. I couldnt find anything with a tad bit bigger width that I needed and all descriptions with these measurements said its for the average standard size queen so I just took my chances. Its still enough for me to love it and keep it but if I had to guess I'd say it could be about a centimeter to a half inch longer in width and it would have fit right in snuggly. This is why I had to lay it over the wood slates or one side wouldnt sit up properly on the wood boarder on the inside frame. It was either the description or other reviews that said laying it over the current frame/slats was fine and it is. Hope this info helps. I'd buy again if another bed in the house has issues with the wood slats again
J**.
great bunkie board at great price
Our guestroom queen platform bed wooden support slats were falling apart. I just got a new expensive mattress for the bed and read that metal bunkie board would provide more support and keep the mattress healthier for longer. After reading the reviews on this ZINUS metal bunkie board, I ordered it. It took a couple of days longer than I expected to receive it but it was during the holiday madness. Arrived in 1 long, flat box. All the pieces were there. Instructions were clear, and it was SO quick and easy to assemble! Everything clicked into place and nothing was defective or the wrong size etc. It fit well in the queen platform bed frame. There was maybe an inch or less of space between the bunkie board and edge of the platform, but it did not slide around. The mattress fit exactly in the platform frame so it did not slide around on the bunkie board so I did not have to use the adhesive on some of the slats that were supposed to hold the mattress in place. All in all, it was a great product that was very easy for 1 person to assemble, and it did exactly what it was supposed to do for a GREAT price! I have no complaints.
E**S
Sturdy and Easy-to-Assemble Bunkie Board
The ZINUS Quick Lock Bunkie Board provides excellent support for mattresses, functioning perfectly as a box spring or bed slat replacement. The metal frame with steel slats feels solid and durable, and the quick-lock assembly system makes setup simple and hassle-free. It offers a stable, even foundation that enhances mattress performance and longevity. Practical, reliable, and well-built, this bunkie board is a functional and space-saving solution for any bed setup.
C**S
WOW!
We are very impressed with the quality of this product! Didn't take pics but probably should have..figured there are plenty in these reviews. Not counting breaking down the bed, removing the old box spring and cleaning under bed, putting this together took all of 15 minutes. Not only did it fit perfectly, all the pieces were clearly marked, and instructions were easy and clear. It was actually fun to put together ❤️ After having read reviews with tips, we did lay 3 sheets of pegboard on top of it, as well as non slip rug cloth on top of that to insure mattress would not move. Heavy duty construction...extremely well made...kept telling my husband how impressed I was., and what a difference in comfort and sleep! No sound at all, nor movement. Just be careful upon waking and getting up...the floor is much closer now! Lol. We would emphatically recommend this product if you're in need of good quality support for your mattress.
J**.
Great Low-Profile Box Spring – Just a Heads-Up for Platform Bed Frames!
Overall, I really like this box spring, and I'm giving it a solid 4 stars. Getting it into the house and put together was super easy. I especially loved that Zinus included a torque Allen wrench; it seriously made assembly a breeze. The only real snag with this box spring is if you're using it with a bed frame that already has a built-in platform for your mattress. It takes a bit of rigging because it tends to slide around and creak since it's metal on metal. My fix involved using zip ties to secure it and some foam to quiet down that metal-on-metal noise. If you're using this on a traditional bed frame, you'll have a much better time. That said, it offers more support than my bed frame's platform alone, and the 1.6" low profile is fantastic because our bed isn't nearly as tall as it would be with a 4" or 5" box spring.
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