I love this box spring! I got the 4” for my queen bed and it’s much quieter than the bunkie board I was using before. As a matter of fact, it doesn’t make a sound. My bed is much for stable and comfortable because of it. I will be replacing my son’ bunkie board with a Zinus box spring within the next few weeks. Assembly (or lack thereof) was also a breeze - simply unfold and place the cover on!

I was especially surprised that both split-king box springs came in one box. The bed frame was easy to put together and the box springs were even easier to unfold. I find myself going to bed early every night now that I have my new bed. Thank you Zinus!

Im just waiting for the week to be up so I can try to get another one sent. My 12 inch pressure relief green tea mattress is 10 inches at best the corners are curled up and the smell is nauseating. I have aired it out as best as I can but the smell is still there. I have to change my sheets every day cause it sticks to them. My whole room smells sickening. I'd like to give it another try and fingers crossed I can get the one that other people have reviewed with no or little smell and original shape and size..

I have been using the king-sized version of this mattress and bi-fold box-spring in my guest room for the last 2 years and all of my family and friends love it. Every single one of them tells me how comfortable this mattress is when they stay. It is a very firm, supportive mattress, even after 2 years or regular use. I plan to buy a the queen set for my own bedroom very soon and my mother plans to buy one soon as well. If you want a softer bed, put a 4-inch memory foam topper on it. The combination of firm support of the mattress and softness of the memory foam will make it feel like you are sleeping in a cloud.

It unfolds easy but no instruction how to fold back up. I am returning because it is not exactly box springs. I bought the twin size. It just gets the mattress off the floor. I wasn't going to use it for permanent use. Just for grandchildren visits and wanted to be able to store it. It was a fail for me but I can see where it can save people money. I just need instructions how to fold it back.

With the newest mattresses that are not made to go with traditional box springs, this product bridges the gap and offers a well made and easy to install substitute. If you have a traditional bed frame, you still need something in place of the box springs and this works perfectly!! Shipped quickly in a box that is manageable, even with a king size that we purchased. Easy to move into the bedroom where it was installed easily and without any hassle.

After adding the Zinus boxspring, our mattress felt much more firm and supported. Besides putting us at the right height so our pillows would not get wedged between the mattress and headboard, we slept much better than just with the mattress by itself. It was fairly easy to unfold and get onto bed frame with one person.

I just received my 5 in bifold full size box spring, however I’m now realizing its 1 inch smaller on both ends than the mattress I was going to order. I am having a hard time finding a mattress the same size. Will the extra inch on my mattress look and feel right? Not sure why the dimension's are off. I would think a full size boxspring would be the same dimensions as a full size mattress?

Arrived quickly and was easy to fold out. Also, this product is cheaper (and obviously, much more convenient and sturdy) than the junk others sell at the big box mattress stores. We recently bought an Avocado King mattress and that company does not sell box springs so they recommended Zinus. Glad they did! The new mattress sat too low on our new bed but now with the steel box springs, it is perfect. Note that we originally had the box springs up-side down which is not comfortable. After a night's sleep, we woke up smarter, did the flip and now the new bed, new mattress and new box springs work in harmony.

We bought our second mattress because we upgraded from a queen to a king. This time we added the box spring to our purchase and it’s one of the best decisions we’ve ever made. This mattress is comfortable, the box spring is heavy duty, and we are going to be Zinus customers for a long time. We could not be happier.