Almost 24 hours (in 2 hours it will be 24hrs) and the mattress is very firm and the coils can be felt poking through the top layer is very thin like very thin its like a sponge on top of springs if you lay on top you can feel them the card said to wait 72 hours will be back when the time is up and will update.

The instructions a bit confusing but overall the BoxSpring is great. One issue the rails will come out and do not really fit snug and the COVER does not fit. I called Zinus and they are giving me difficulty be careful and if you order online they will not accept purchase history as proof of purchase and Reps are rude.

A put together metal frame that took me about an hour to assemble on my own. I was expecting a regular box springs. Maybe it's time to move on from that. With a king size it's a 9" platform which mashes the bed a lot higher than expected, but seems super comfy if you like a firm bed. Jumping up into bed might be worth the $100 we saved over a serta box springs

I don't need multiple hours of laying this out and then assembling it (20 metal rods to screw together). To hold it while screwing rods together likely would have taken a second person to hold it. Two people x two hours minimum, not worth it. As soon as I took one look at the directions, I knew after committing time to assembly, it might not be right and cover might not fit, etc..... We sealed it up and returned it to Samsclub. I ordered another brand from a local furniture store (no assembly) and even with picking it up, it was surely less time than I would have spent on this.

I purchased to replace a squeaky wooden box spring - very satisfied with the purchase. I did not read the some assembly blurb so my husband was surprised when it arrived in 4 days. It needs full assembly! Not too difficult but assembly is not "some" and the instructions are sketchy at best. My husband assembled by himself including putting on the cover. It looked perfect and fits perfectly in the king frame. Tracking number was not accurate for Fed Ex so we could not track purchase; however it arrived quickly. Definitely would recommend but know you need to completely assemble. Be patient or don't order it.

I'm a 78yr old mechanically skilled arthritic, the most difficult step was bringing the box in and making myself follow the directions. Pros: Best directions I've seen in years. Excellent small parts package, well marked, even the spares. Good provided tools. All the parts fit!!! Cons: Nothing of consequence, the cross bars are a "snug" fit, I tapped them in with a rubber mallet. Total time from box opening to setting the mattress on top was just under an hour and a half.

Flimsy and not very supportive.

Solid

This is high quality, easy to assemble, very well made. My husband said to rate it 5 stars, he doesn't say that for anything!

We put together 4 of these in less than 1.5 hours. They included everything needed such as a mini socket. They seem to be very sturdy.