Search  for anything...

ZINUS 9 Inch Metal Smart Box Spring with Quick Assembly, Mattress Foundation, Strong Metal Frame, Easy Assembly, Full

  • Based on 82,345 reviews
Condition: New
Checking for product changes
$115.00 Why this price?
Save $40.00 was $155.00

Buy Now, Pay Later


As low as $19.17 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Jun 22
Order within 19 hours and 31 minutes
Available payment plans shown during checkout

Size: Full


Style: Box Spring (New Easy Assembly)


Features

  • Steel Interior Frame With Poly Jacquard
  • STRONG, DEPENDABLE, AND READY IN NO TIME - As if its ultra-durable steel structure and convenient packaging werent impressive enough, our original Smart BoxSpring has been given a quick-assembly upgrade
  • DURABLY ENGINEERED - Durable steel is used to construct the inside framework of this foundation; twin/twin xl sizes support a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs
  • EASIER THAN EVER ASSEMBLY - With fewer bolts and tool-free locking brackets for intuitive setup, assembly takes only minutes to complete
  • THOUGHTFULLY PACKAGED - All parts and instructions are packed into one compact box that ships straight to your door
  • Worry-free 5 year limited warranty included; box spring only, a bed frame or platform bed is required to support this foundation and is sold separately

Description

As the backbone for solid mattress support, a box spring that falls short can make or break your night’s sleep. We developed the Smart BoxSpring® with unbeatable durability and rock-solid stability to keep your mattress in shape for years to come. And our latest quick assembly version gives you total confidence when it comes to setup, requiring fewer bolts and ingeniously designed with easy to use, tool-free brackets. With our simple, step-by-step instructions on hand, you’ll have this foundation built and ready to use within minutes. Built with a strong and durable steel frame and a versatile poly jacquard cover that slips right on, the Smart BoxSpring® is the picture of dependability for any mattress. All packed in a compact shipping box with everything included, even our 5-year worry free warranty! Now that’s peace of mind you can sleep on.

Product Dimensions: 73.8 x 53 x 9 inches


Item Weight: 35.4 pounds


Manufacturer: Zinus


Country of Origin: China


Item model number: ZU-ABS-9FS


Fabric Type: Steel Interior Frame With Poly Jacquard


Maximum recommended load: 700 Pounds


Care instructions: Wipe with Damp Cloth


Assembly required: Yes


Warranty Description: Worry-free 5 year limited warranty included.


Batteries required: No


Included Components: Steel Frame, Cover


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jun 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great Value
Size: Full Style: Box Spring (New Easy Assembly)
Frame was very easy to assemble. Fits my full matter frame perfectly. Isn't noisy. Supports my mattress nicely. Comes in a skinny box and perfect for an apartment where you don't have to haul a big bulky wood box spring up 3 flights of stairs. Was an excellent value.
Reviewed in the United States on June 6, 2025 by kcuzz1218

  • Metal box spring
Size: Twin Style: Box Spring (Original)
I love the metal box spring. It's not like the board box springs. They last so much longer. I've had this one for several years now and it still is holding up. I definitely recommend the metal over the board
Reviewed in the United States on June 6, 2025 by Melba Aultman

  • Box spring
Size: Queen Style: Box Spring (Original)
If I had to buy another one of these, I definitely would. It came with very simple instructions to follow and put together. I have not had any problems since putting the bed together. It took me about 15 minutes to assemble, and I’ve been sleeping peacefully with the support of this ever since!
Reviewed in the United States on May 30, 2025 by Keayra

  • Pleasantly surprised....so far...Update ....30 JAN 2021...
Size: Full Style: Box Spring (Original)
First of all, I was pleasantly surprised with the quality of this box spring. Only one night sleeping on it but no squeaks so far. I should add that I will update this review if any problem occurs. Before I ordered this, I read through all of the questions and answers which took a couple of hours. So glad that I did as several customers mentioned the cover and problems putting it on. It is a very tight fit but if I can do it at my age, anyone can do it. A suggestion to the manufacturer would be to add perhaps 1/4 to 1/2 inch more fabric and it would not be so difficult to place over the box spring. I also watched the video twice before I ordered this and that was easy to follow. Four of the pieces were labeled with a yellow sticky that said 'up' which was most useful. My other suggestion would be to label all of the pieces with 'A, B, C, D etc. which would have decreased my assembly time by at least one hour. I did go back and watch the video again while I was assembling. Total time for me to get the pieces in the right order, double-check the placement, tightening of the hardware, etc, was 4 hours. After I got the box spring assembled, I went around each piece and put pressure on each one, to make sure things were as tight as I could get them. I am visually impaired so perhaps that contributed to the amount of time it took me to assemble it. At my age, I am thinking that perhaps I should have had someone make sure I had everything tightened well. If anything loosens up over time, will have someone help tighten it for me. All in all, so far and so good. The mattress I have on top is really heavy and as I stated previously, the box spring has no squeaks and appears to be most durable. In other words, no movement of the box spring. Update to follow if anything should occur. Edit on 26 MAR 2019... Have been using this for 17 months now... No squeaks, absolutely zero problems! Still as satisfied as the day i first reviewed this in October of 2017. And, my recommendation is still that I highly recommend this box spring. Update on 10 OCT 2019.... The 2 year anniversary of this box spring and once again there are no squeaks and zero problems. Still highly recommend this box spring~ Update as of 30 JAN 2021...Absolutely still in perfect condition. Was going to increase the star rating to 5 but don't dare to change it. Truly outstanding and most highly recommend this item for everyone that wants a sturdy and long-lasting box spring. Could not be any more pleased with a product... Most highly recommend... ... show more
Reviewed in the United States on October 14, 2017 by Serenity...

  • Steel Bedframe
Size: King Style: Box Spring (Original)
Once I figured out how to put the darn frame together, it was good. It made my mattress firmer. No more squeaks quality for the price makes my bed a lot more comfortable.
Reviewed in the United States on June 6, 2025 by Lisa

  • Good height and easy assembly
Size: Twin Style: Box Spring (Original)
The instructions for assembly and the assembly itself is similar to IKEA products. This box spring (original) arrived last evening and I've put it together this morning. Putting all of it together on your own until you have it set up for use takes a little over an hour. It would have been good if the box spring's cloth cover covered the under side as well, so you didn't have to clear up dust more often. I needed this box spring to add some height to my whole bed setup to get in and out of bed easily. It works! ... show more
Reviewed in the United States on May 6, 2025 by Glutenfreesista Glutenfreesista

  • Excellent Purchase
Size: Twin Style: Box Spring (Original)
My husband said it was super easy to put together…in fact he said it was probably the most easily assembled thing we’ve bought in years, and the tools that came with it were “perfect”. Seems extremely well constructed.
Reviewed in the United States on May 30, 2025 by LoLo

  • Definitely worth the money!!!
Size: Queen Style: Box Spring (New Easy Assembly)
Very easy to assemble. My mattress fits on it perfectly. Definitely going to be purchasing one for each of my kids. I love that the cover can be removed and washed as well. Great product.
Reviewed in the United States on May 30, 2025 by Tarra

Can't find a product?

Find it on Amazon first, then paste the link below.