Zinus 9 Inch High Profile Smart Box Spring Review

By Megan Griffith

Picking out a box spring is just as important as picking out a mattress, so we’ve written a review for one of the most innovative, supportive box springs out there: the Zinus 9-inch high profile smart box spring. This box spring is durable, supportive, and exceedingly well-made, and if you don’t mind the high profile, it is one of the best box springs on the market today.

Before picking out a box spring, it’s important to know why you need a box spring in the first place. Even the firmest, most supportive mattresses need their own support to keep them from sagging, and a box spring is a great way to provide that support. 

A good box spring needs to be sturdy to keep your mattress in tip-top shape, but it’s also important that it be well-made to prevent squeaking. There’s nothing worse than waking up in the middle of the night because your box spring is squeaking as your partner tosses and turns.

The Zinus 9-inch smart box spring has gotten a lot of positive feedback in each of these categories online, so we wanted to see if it really lived up to the hype.

Zinus 9 Inch Smart Box Spring Highlights

The Zinus 9-inch high profile smart box spring has key advantages over typical box springs:

  • High-profile box spring makes your bed the centerpiece of the room
  • All-steel construction for strong support
  • Easy assembly with all needed tools provided
  • 5-year warranty
Best for: May not be best for:
  • People who want to invest in a box spring that will last, even if it’s a little more expensive
  • Heavier-set sleepers
  • People who like their bed to be the focal point of their bedroom
  • Short or petite people
  • People who prefer a low-profile bed
  • People on a very tight budget

What Makes the Zinus Smart Box Spring Special? 

The Zinus 9-inch high profile smart box spring comes at a fair pricing point given its high-quality materials, and it is highly reviewed as one of the best sellers on Amazon for box spring mattress foundations.

A 9-inch mattress foundation looks impressive in a bedroom, but looks don’t mean anything if it’s uncomfortable to sleep on, but this product holds true to its word as one of the best sellers on Amazon, offering great support for a comfortable night’s night. It also comes in compact packaging that is easy enough to open up, and inside is everything you need for assembly, tools and all. 

The structure provided is made of highly durable, sturdy steel that can support considerable weight without folding or caving in on you. The welding work on the box is also beautifully done and quite impressive.

✅ Pros

  • Solid steel construction in traditional box spring form
  • Made for all sizes, from Twin XL to Cal King
  • 5-year limited warranty
  • Convenient packaging with all tools necessary for assembly included

❌ Cons

  • 9-inch height may be a problem for some people 
  • Box spring cover is difficult to put on
Zinus smart box spring features highlighted

Design Features

  • Weight: 42 lbs
  • Height: 9 inches
  • Weight limit: 4,200 lbs
  • Assembly required?: Yes
  • Warranty: 5 years 

Structure 

The integrity of the structure presented in this steel frame is one of the best on the market. The overall structure of the Zinus 9-inch is thoroughly impressive. The solid steel construction means it never squeaks, and it is made with slats 6-7 inches apart to provide consistent overall support. 

You can throw just about anything at it (even though we don’t recommend doing that) and it holds up through thick and thin. It’s an impressive frame with unparalleled structure and the ability to withstand an enormous amount of pressure.

Packaging 

The packaging is nice and convenient as well. It’s not too large and it’s not too heavy when it arrives at your front door whether you order a twin size or a queen size. You’ll be able to easily get it into your home and get it all set up for your convenience.

Assembly

While no one likes to do assembly, the overall assembly of this bed is relatively easy and done in a few simple steps. The frame is made mostly of heavy-duty steel and a lot of the work is already done for you.

All you have to do is follow the simple instructions included with your guide and you’ll have your bed set up in no time. The most difficult part of the assembly is getting the cover on, which many users reported as being much more difficult than the rest of the assembly.

How It Performs

Durability

The overall durability of the frame is solid as a rock. There’s not much we can say in terms of durability because the thing is made of pure hard steel. Most box frames are made of cheap metallic material and they tend to bend and wear. One of the biggest challenges for heavier customers especially is finding a box spring that will allow them to lay on the bed without a lot of squeaking or damage to the bed, but the Zinus Smart Box Spring proves to be a durable choice.

Support

With a solid steel construction and supportive slats placed every 6-7 inches, the Zinus 9-inch high profile smart box spring offers considerable support. The whole point of a box spring is to provide extra support for your mattress to keep it from sagging, and there is no better box spring for overall support than the Zinus 9-inch.

Limited Warranty

It’s always nice to have a warranty attached to a product, even if it’s one of the bestselling products on a popular website. This product proudly supports a 5-year limited warranty that will ease your mind and will help you replace anything that’s broken, if that ever happens. You’d have to be doing something seriously wrong to break something on this frame.

FAQs

Can you put a Zinus mattress on a box spring? 

Of course! According to Zinus customer support, all kinds of Zinus mattresses, from memory foam mattresses to innerspring mattresses, can be used on a variety of platforms, including a box spring, platform bed frame, wood slat base, or adjustable frame.

What is a smart box spring? 

A smart box spring is a term specific to the Zinus brand, meant to indicate that the box spring was created with an intelligent design scheme that will provide your mattress (and your back!) with the support it needs.

How do you assemble a Zinus smart box spring? 

The Zinus smart box spring is easily assembled with easy-to-follow instructions and a few tools (included with the box spring).

Are metal box springs good?

Metal box springs are great, especially for heavier-set sleepers. Solid metal holds up better under more weight compared to hollow metal or wood. Plus, mattresses are plenty thick that you won’t feel the metal at all while you’re sleeping.

Summary

So, does this low budget box spring hold up as one of the best-selling box springs on the internet? From our experience, we would definitely say so. The quality of the Zinus 9 inch high profile smart box spring is quite impressive from the ground up.

There are different sizes available as well from the same company so if you’re looking for a nice California King sized bed or you’re looking for something small like a Twin XL, there are different sizes for your mattresses. The assembly instructions that came with the bed was not only easy to understand but it was easy to assemble as well, which is a huge plus in our book. We hate assembly like I’m sure most of you do. Overall, this is a top-notch, high-quality frame that you’ll come to love.


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