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Superay 2 Inch King Box Spring Low Profile Metal Bed Base, Easy Assembly | Bunkie Board Bed Slat Replacement, 3000 lbs Capacity Heavy Duty Mattress Foundation With Rounded Corner, Noise Free, Black

  • Based on 682 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Sep 10
Order within 11 hours and 21 minutes
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Color: 2 Inch


Size: King


Features

  • Sturdy Upgraded Structure: The box spring features 13 rows of steel slats for support, with a denser arrangement compared to other products. This ensures even weight distribution and exceptional durability. It can handle up to 3000 pounds without deforming or wobbling.
  • Safe Rounded Corner Design: With safety in mind, all four corners of the box spring are designed with rounded edges to minimize the risk of injury from sharp edges. This thoughtful design helps protect family members from accidental bumps, providing peace of mind during everyday use.
  • Quiet Sleep Experience: The slats are designed to avoid direct contact, reducing friction and eliminating squeaky noises. No matter how many times you toss and turn at night, this box spring remains silent, ensuring a peaceful sleep.
  • Versatile Compatibility: At just 2 inches in height, this box spring is perfectly suited for bunk beds, daybeds, and both inset or drop-in platform bed frames. It also works seamlessly with various types of mattresses, including innerspring, memory foam, and latex options, offering unmatched flexibility and convenience for your bedroom setup.
  • Quick and Easy Assembly: Designed for simplicity, all components come neatly packed in one box. Assembly takes only a few minutes, allowing you to effortlessly set up your sleeping space and start enjoying its benefits right away.

Size: King


Material: Metal


Product Dimensions: 2"H


Style: Modern


Special Feature: Squeak Resistant


Other Special Features of the Product: Squeak Resistant


Included Components: Installation Manual, Slat


Brand Name: Superay


Unit Count: 1 Count


Manufacturer: Superay


Model Number: SUP-MT23


Manufacturer Part Number: SUP-MT23


Set Name: King


Material Type: Metal


Assembly Instructions Description: Included


Style Name: Modern


Color: 2 Inch


Finish Types: Powder Coated


Furniture Finish: Black, Gray, White


Form Factor: Rectangular


Shape: Rectangular


Compatible With Mattress Size: King


Maximum Weight Recommendation: 3000 pounds


Size: King


Item Dimensions L x W x H: 2"H


Item Depth: 2 inches


Item Dimensions: 2 inches


Frequently asked questions

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

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

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View our full returns policy here.

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Top Amazon Reviews


  • Sturdy and easy to put together
Color: 2 Inch Size: King
Very sturdy and cut actually gave our bed unexpected stability and a great addition to our new mattress on the original slats to the bed. Very pleased.
Reviewed in the United States on July 20, 2026 by Thomas Fam

  • Affordable and wellmade
Color: 5 Inch Size: Twin XL
Super easy to build and effective
Reviewed in the United States on July 12, 2026 by Holiday Madness

  • Easy to assemble
Color: 10 Inch Size: Queen
It was easy to put together and very sturdy. I feel like it was a great value for my money and I think it should last many years.
Reviewed in the United States on June 8, 2026 by Frugal Shoper

  • It is made well for the purpose
Color: 10 Inch Size: Queen
Much more convenient than the big boxspring! Such an easy build! Holds a queen size really good!!
Reviewed in the United States on July 20, 2026 by beverly d gonzalez

  • EXTREEMLY DIFFICULT TO ASSEMBLE DUE TO THE PARTS
Color: 5 Inch Size: Queen
I have mixed opinions about the 5" Superay Queen Box Spring. On the good side. It's a brilliant design.Koodos to the designer. I was impressed of the ingenious design and how it was ""meant"" to fit together........On the bad side. The assembly nuts and bolts were horrible. I have never assembled nuts to bolts with such trouble. When you put a nut on a bolt its suppose to freely spin until you tighten it. On these, they were tooled at the factory so badly that the nuts could only be forced on. Jamming up, impossible to spin freely. Every microinch of the thread on the bolt was rough and impassable without a tool, which by the way, the included tools were not in the least bit useful. I had to get my own wrenches and pliers to make the nuts fit and traverse on the bolts. What was promoted as a 30 minute assembly via the video took all day. It took me nearly 5 hours of managing resistant bolts and nuts to assemble this box spring, After several hours of struggle I finally had the frame assembled. Then to be safe I tightened it completely and the product is in use. A VERY FRUSTRATING DAY TRYING TO ASSEMBLE THIS UNIT. I am sorry to write such a horrible review because the design of the metal box frame was absolutely brilliant. As a retired designer myself i know good design. Its a crying shame the manufacture made it a complete failure. ... show more
Reviewed in the United States on February 20, 2026 by Terry

  • The parts fit and it's easy to assemble
Color: 10 Inch Size: King
Hardware: Excellent. This manufacturer has a clever way of guaranteeing they ship the right hardware. They blister-pack the hardware and specifically label the extra parts. If you are missing a part, you caused the problem. Tools: Poor. The manufacturer includes 2 sad, disposable wrenches and no hex wrench. If you have a miniature, metric socket set, I believe you could fly through the installation. Assembly: Excellent. After I assembled the center cross, I was free to assemble this in any order. If you have some room, assembling this away from the bed would speed the process. My space is limited, so I assembled this box/foundation/platform inside the confines of our bed frame and that was manageable. Tightening the nuts takes far longer than assembling the sections. Sturdiness: Good. All holes lined up properly as did the threads of the integrated nuts. The welds seem complete and placed correctly. The manufacturer does not use lock washers and nuts; instead, they apply thread-locker to the bolts. I do not know about the durability of this solution yet. The entire product is made of light, square tubing. It feels like you could break every part of it over your knee, but the structure becomes strong when you combine the parts during assembly. Rating: I give this a 4 because nothing strikes me exceptional about the product. When I opened the box, I found half the zip ties severed, but all parts were present. Someone adhered the Velcro for the cover onto the sections, which was odd because the directions indicated I would have to perform that step myself. ... show more
Reviewed in the United States on December 21, 2025 by Tommy D

  • Strong and comfortable
Color: 10 Inch Size: King
Need two people to put together, seems strong but I added bunnies boards
Reviewed in the United States on July 16, 2026 by E Forbes

  • Nice Box Spring
Color: 5 Inch Size: Queen
The iron used in the construction of this box spring is very well made. The instructions on how to assemble the box spring came with the package. The rails were marked with labels for ease of assembly. The print on the instructions could have been darker to make them more legible but if you look closely, you can see the letters of the parts at each step. In the photos, you can see the letters. The assembly of the center cross was the most difficult, which is why I took a picture of it. When complete the box looks good but move it by holding the outer perimeter. I used a battery powered drill and socket wrench to make the installation go faster. The cover fits over the top. The bottom is not covered. It took me about 2 hours to assemble. ... show more
Reviewed in the United States on November 24, 2025 by Bob Carter

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