ZINUS 5 Inch WonderBox(TM) Smart Box Spring, Quick Assembly Mattress Foundation, Durable Metal Frame, Twin, Grey

I spent a ridiculous amount of time comparing prices and features before ending up with this purchase and I am so glad I did! Everything is perfect, all the parts, the fit, the engineering, even the finished look. Easy to put together with snap lock connectors. I have a relatively thin mattress and still can't feel the crossbars through it. This is day one. All the negative comments about bed foundations from other sellers don't seem to apply here. As for durability, my expectations are high but we'll have to wait and see.

I never write product reviews, but this was such an awesome purchase. This is the BEST box spring I have ever owned. If you’re on the fence about buying this product, or you’re trying to decide between options, here’s a number of reasons to go with this one.1. Noise Level: NONE. Completely silent. This was my #1 reason for wanting a new box spring in the first place, and it does not disappoint. Our previous box spring (the traditional wood/spring kind) had become squeaky over the years, and kept waking up our 5 month old baby. This new box spring hasn’t made one tiny noise since day one - our baby has been sleeping through the night. Relief is an understatement.2. Sturdiness: I have never felt so supported by my bed. It feels even better than when our previous box spring was brand new, so I know it’s not just because it’s new. I have chronic shoulder pain, and while a new box spring obviously isn’t a cure, I have been waking up significantly less sore for the first time in years. My husband doesn’t have the same pain issues, but he agrees that our bed feels much more sturdy and comfortable, because our bodies are better supported.3. Assembly: So easy. I am not in my greatest shape (I did just have a baby), but I was able to put it together without my husband’s help. The box comes with some screws and an Alan key, and that’s honestly all that’s needed. The directions are pretty easy to follow. I will say that the “Up” stickers were placed on the parts in a way that was a little confusing at times, but if you pay close attention to the pictures in the instructions, you’ll be fine. It took me less than an hour.I cannot recommend this box spring enough. Do yourselves a favor and purchase this. You can thank me later. :)

The product was packaged well and all pieces/hardware were present. Items were clearly labeled with “UP” stickers to minimize confusion but could benefit from identification stickers (A, B, C, etc) to make it fool proof.The instruction illustrations were clear, making part identification simple (again, letter identification stickers would take it over the top) and were easy to follow.Assembly from start to finish took 22 minutes. It’s a simple unfold and snap in assembly with 6 bolts bringing it all together in the middle, 2 plastic caps to cover the tops of the outside center joints, and the fabric covering once it’s put together.Frame seemed pretty solid once assembled and is extremely light - purchased Full size 9” box spring. Will update if anything changes but overall, I am satisfied with the product.

Like other reviewers, I seem to have received a returned product. The zip ties were cut on some of the pieces. One of the H-shaped pieces was defective - the end was missing the button that clicks it into place. However, I am using this foundation on an antique bed with metal rails so it should be held in place by the bed structure.The foundation was very easy to assemble and I appreciated that no tools were needed. It seems fairly sturdy but I think the weight limit is probably very optimistic.

It took me about 30 minutes by myself to put it together, clear instructions and very little hardware to mess with. And it's light weight!

I bought the 5" King size. Super easy to put together by myself. I went really slow to make sure I was doing each step the right way and it took under an hour. Most of the pieces snap into place, minimal hardware. I'm really happy with this purchase.

Its been more than a month of using it. So far so good. No squeaky sound. I have Arthritis. So I need firm mattress and this base supports the futon firm mattress

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-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.