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Zinus

Zinus 5 Inch Metal Smart Box Spring with Quick Assembly, Queen | Mattress Foundation with Fabric Outer Cover, Strong Metal Frame, Easy Assembly

  • Based on 1,237 reviews
Condition: New
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Aug 10
Order within 11 hours and 53 minutes
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Style: New/upgraded with quick assembly


Size: Queen


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.

Size: Queen


Material: Fabric, Steel


Product Dimensions: 78.7"L x 59.5"W x 5"H


Style: New/upgraded with quick assembly


Special Feature: Durable


Other Special Features of the Product: Durable


Included Components: Cover, Slat, Steel Frame


Brand Name: Zinus


Unit Count: 1 Count


Manufacturer: Zinus


UPC: 841550325294


Global Trade Identification Number: 94


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


Item Type Name: Box Spring


Model Number: ZU-ABS-5QS


Manufacturer Part Number: ZU-ABS-5QS


Set Name: Queen, 5 inch


Material Type: Fabric, Steel


Product Care Instructions: Wipe with Dry Cloth


Headboard Material: Fabric


Style Name: New/upgraded with quick assembly


Color: Grey


Finish Types: Steel


Furniture Finish: Alloy Steel


Form Factor: Rectangular


Shape: Rectangular


Compatible With Mattress Size: Queen


Maximum Weight Recommendation: 700 pounds


Size: Queen


Item Dimensions L x W x H: 78.7"L x 59.5"W x 5"H


Item Weight: 36.8 pounds


Item Depth: 5 inches


Item Dimensions: 78.7 x 59.5 x 5 inches


Assembly Instructions Description: Instructions for easy, tool-free assembly are provided.


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 10

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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Top Amazon Reviews

    • ZINUS 5 Inch Metal Smart Box Spring (Quality great!)
Style: New/upgraded with quick assembly Size: Twin
Review Image by Mina
The Sinus twin boxspring worked great for my needs at a good price in the size that I needed, 5 in. The quality is very good and sturdy and fits a twin frame perfectly. I plan on putting a air mattress on top of it for visitors. One piece was missing on the tip of a cross rod, lost in the shipment but the company responded quickly and replaced it immediately. Good customer service! Recommend buying this if you need a good twin box spring. Update 9-14-25. Twin box spring started collapsing periodically. Unfortunately I had to buy wood slats to support it so it wouldn't collapse. ... show more
Reviewed in the United States on March 23, 2024 by Mina
    • Good and sturdy
Style: New/upgraded with quick assembly Size: Twin
Really is just what I needed. I changed out a mattress/box spring on my bed and the thing looked like Princess and the pea's mattress. It was so high it looked ridiculous! I looked for a box spring that didn't have the height. I didn't realize you could get a shorter one (low profile) , till I looked on Amazon. It did the trick! The bed looks normal now. This is not a box spring. it is a sturdy metal frame. it had to be assembled. But it does come with a cover, so it looks like a box spring, once assembled. It's made good and looks to me like it will hold up a long time ... show more
Reviewed in the United States on July 3, 2025 by granny
    • Very Nice, No Issues
Style: New/upgraded with quick assembly Size: Queen
Ordered the 5" Queen size. All parts were there. Assembly was easy, parts fix fine with no need for "tuning" anything. Appears to be very sturdy and I don't see the possibility of anything warping like may happen with wooden parts. We have a wooden bed frame that this fits on/in and because this is metal it slides a little. I'm going to add some "Allagator" tape (where one side of the tape is like a heavy gauge sand paper) to the metal frame which should stop it from sliding. So far I would recommend this. ... show more
Reviewed in the United States on March 24, 2025 by Thorne
    • Do NOT buy
Style: New/upgraded with quick assembly Size: Twin
Review Image by EE
Do NOT buy this. It is cheap and broke within months. The plastic that connects the metal is cheap and cracked. I tried to fix it and pinched my entire hand. Save yourself the money and effort in the long run and DO NOT BUY THIS!!
Reviewed in the United States on May 8, 2026 by EE
    • Easy to assemble and well made
Style: New/upgraded with quick assembly Size: Queen
Easy to assemble picture directions I am 67 and I laid out all the pieces before I started . Just be sure to keep the sides marked “up” all up . The 8 screws are a little challenging because they use an Allen wrench and you can’t make a complete turn w it . However it’s easy to stand up on one end for better access to the screws . I was able to carry it into the bedroom by myself . Fit the queen bed frame fine . ... show more
Reviewed in the United States on November 19, 2025 by fla rt
    • Easy Assembly
Style: New/upgraded with quick assembly Size: California King
Easy to assemble. Sturdy. Only down side was the slats. Mattresses these days are made differently with foam, gel, etc so the slats don’t give total support. We had to add a thin plywood on top. Otherwise it works fine for our use.
Reviewed in the United States on March 14, 2026 by DKK
    • Super Easy to Assemble & Very Sturdy!
Style: New/upgraded with quick assembly Size: Twin
I was surprised at how quick and easy this box spring was to put together, it took me less than 5 minutes. The height is perfect for keeping my 18 month olds bed at a comfortable height to ensure if she does fall off her bed it’s not too high. The metal frame feels solid and not only supports the mattress and her really well but also an adult. This made the transition from crib to bed effortless, she’s gotten such good sleep on her new bed. No creaking or wobbling so far. Great value for the price—I’d definitely recommend it! ... show more
Reviewed in the United States on July 10, 2025 by Court
    • Easy assembly and perfect height.
Style: New/upgraded with quick assembly Size: Queen
Had purchased one a few years ago and it is great, but the newer versions are much easier to assemble. Height is perfect if you need a low profile box spring.
Reviewed in the United States on June 30, 2026 by tomvargo

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