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ZINUS

ZINUS 7 Inch Metal Smart Box Spring, Mattress Foundation, Strong Metal Frame, Easy Assembly, Twin

  • Based on 18,721 reviews
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Size: Twin


Style: 7 inch


Pattern Name: Original


Features

  • TWIN DIMENSIONS - The dimensions of this standard twin size box spring are 74 x 38 x 9 inches. The length is 5 inches shorter than our Twin XL size. Please measure your bedframe to ensure compatibility.
  • THE LAST BOX SPRING YOULL EVER NEED - Unlike a traditional box spring, the Smart Box Spring is made of solid steel that comes together in no time and is backed by our ZINUS Peace of Mind 5 year warranty
  • DURABLY ENGINEERED - Durable steel is used to construct the inside framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while Full, Queen & King sizes can support up to 700 lbs
  • THOUGHTFULLY PACKAGED - All parts, tools 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

We like to think of a box spring as the backbone for your mattress. The best kind should be flat, level and built to keep your mattress in tiptop shape; and that’s just what the Smart Box Spring does! With its easily assembled, dependable steel structure, you can rest assured that your mattress will be sitting pretty. An included poly jacquard cover blends with the rest of your bedroom, and with a variety of different thicknesses to choose from, you can pick the one you need to customize the height of the bed. 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.

Size: Twin


Product Dimensions: 74"L x 38"W x 7"H


Special Feature: Durable


Color: Grey


Finish Type: Steel


Size: ‎Twin


Product Dimensions: ‎74"L x 38"W x 7"H


Special Feature: ‎Durable


Color: ‎Grey


Finish Type: ‎Steel


Included Components: ‎Cover, Slat, Steel Frame


Compatible With Mattress Size: ‎Twin


Brand: ‎Zinus


Furniture Finish: ‎Alloy Steel


Product Care Instructions: ‎Wipe with Dry Cloth


Assembly Required: ‎Yes


Ground To Item Distance: ‎7 Inches


Manufacturer: ‎Zinus


UPC: ‎841550100099


Form Factor: ‎simple flat metal frame


Global Trade Identification Number: ‎99


Item Weight: ‎25.7 pounds


Item model number: ‎OLB-ABS-7T


Is Discontinued By Manufacturer: ‎No


Date First Available: December 29, 2016


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

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.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Effortless Assembly and Rock-Solid Support – A Huge Improvement Over Older Models
Size: California King Style: 7 inch Pattern Name: New Quick Assembly
I’m really impressed with how far assemble-at-home box springs have come. I bought this California King size box spring and couldn’t be happier with the experience. Setup was incredibly easy—everything fit together perfectly, and I had it fully assembled in under 30 minutes without any frustration. It feels solid and well-built, offering great support for the mattress. The last time I assembled a box spring at home was back in 2018, and that one was a struggle from start to finish. This one was the complete opposite—quick, intuitive, and sturdy. Highly recommend if you're looking for a hassle-free option that doesn't compromise on quality. ... show more
Reviewed in the United States on July 20, 2025 by Michael Accardi
    • Great and strong frame easy to put toghter
Size: Queen Style: 5 inch Pattern Name: New Quick Assembly
Great for holding my memory foam matress. The matress cant slid between. And with the frame below I can sit up. Turn and be at a perfect sit postion. To stand up work unloading trucks. And walk all day the matress I got is perfect.
Reviewed in the United States on September 17, 2025 by shawn spilman
    • Strong and yet affordable
Size: Queen Style: 7 inch Pattern Name: Original
Had never heard of a box spring that is not made from wood. At first, I was skeptical to order a box spring from steel. My skepticism then got slightly worse when I read some negative reviews about "OHM, it takes too long to assemble!" Being an engineer and an optimist upon reading majority of great reviews, I went ahead and placed an order for queen box spring. Not only it arrived in time but it was also well-packed. It is heavy and you will need 2 people to carry the box from outside to your bedroom. Once I unopened the box, I was surprised to find the individual pieces tied up in groups based where they all go. Every single piece is numbered and lettered. A piece numbered "1" connects to another piece numbered "1", numbered "2" connects with another numbered "2". Very simple and easy. The kit also comes with tools. The part breakdown is as per below: A (inner long rail) = 2 B (inner short rail) = 1 C (outer short rail) = 2 D (outer long rail-1) = 2 E (outer long rail-2) = 2 F (Slats) = 10 S (shortest screws) = 8 M (mid-length screws) = 4 L (long screws) = 2 H (nuts) = 10 The best advice is that open the box, remove the cable ties, lay out all parts on floor as per the intended connection and get an idea of who connects to who (without actually assembling). It is otherwise called a "raw" or a "draft" assembly". Once it is done, it takes 30 minutes MAX to connect all components. I then put the cover on it and zipped it up. Voila, it was now ready to be placed on the bed. The moment of truth was moments away. My daughter and I lifted it up and placed it on her queen bed. It fit perfectly. We then put the mattress and lied down on it. It is very sturdy and does not squeak upon rolling. Overall, it is very strong and affordable. Here is the best part. It can be unassembled and moved to another place much easily (than the traditional wood box spring). I highly recommend it. Buy it with full confidence! ... show more
Reviewed in the United States on February 24, 2020 by Vijay
    • Good Value Modifications Recommended
Size: Full Style: 9 inch Pattern Name: New Quick Assembly
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. Local retailers were quoting me 2-3 hundred for a traditional box spring. Apparently they aren't commonly used anymore which is the reason stated for the high prices. -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. Update 9/25/25: Still holding up. Haven't had to tighten anything and it's still quiet. Keep in mind though that this is being used for a childs bed but Mom and Dad do spend a fair amount of time getting in and out of it. ... show more
Reviewed in the United States on December 9, 2024 by Beau
    • Good quality
Size: Twin Style: 5 inch Pattern Name: New Quick Assembly
Easy assembly, very sturdy construction. Easy to disassemble when you have to move. Good quality for the price.
Reviewed in the United States on August 26, 2025 by Charles G.

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