King Box Spring, 7 Inch King Size Box Spring Only, 3000 lbs Heavy Duty Metal Frame Mattress Foundation with Fabric Cover, Easy Assembly-Noise Free
Condition: New
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This item is eligible for return within 30 days of receipt
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.
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Availability:
In Stock.
Arrives
Monday, Sep 8
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Size: King
Color: Black
Features
- SLEEK PROFILEElevate your sleep experience with our 7 inch height king size box spring, ideal for those who prefer a bed closer to the floor or have taller mattresses. Compatible with various mattress types, including innerspring, memory foam, and latex, this box spring enhances any sleeping setup.
- NOISELESS AND COMFORTABLEEnjoy uninterrupted, peaceful nights with our silent design. No matter how much you toss and turn, this king box spring remains completely noise-free, ensuring a restful sleep environment. Wake up feeling refreshed and ready to take on the day!
- HEAVY DUTY METAL Built to last, our king box springs for bed features heavy-duty metal slats and reinforced steel construction, supporting up to 3000 lbs. Whether you're sleeping solo or with a partner, this mattress foundation offers unmatched stability and durability for years of reliable use.
- EASY TO CLEANMaintain a clean and hygienic sleeping space with ease. The high-quality fiber cover is breathable, shrink and wrinkle-resistant, and includes elastic bands for effortless removal and cleaning, keeping your sleep environment fresh and inviting.
- EASY TO ASSEMBLESimplified assembly means you can set up your new metal box spring in minutes. All necessary tools are included, and with our integrated construction, it's a breeze to put together. Plus, Were Here for You: Premium After-Sales Service You Can Trust.
Size: King
Product Dimensions: 80"L x 76"W x 7"H
Special Feature: Box Spring Cover Included, Noise Free, Easy Assemble, Squeak Resistant
Color: Black
Finish Type: Polished
Size: King
Product Dimensions: 80"L x 76"W x 7"H
Special Feature: Box Spring Cover Included, Noise Free, Easy Assemble, Squeak Resistant
Color: Black
Finish Type: Polished
Included Components: Box Spring, Box Spring Cover, Toolkit
Compatible With Mattress Size: King
Brand: OSASET
Assembly Required: Yes
Ground To Item Distance: 7 Inches
Manufacturer: OSASET
Form Factor: Rectangular
Item Weight: 39.9 pounds
Item model number: King Box Spring
Date First Available: May 17, 2024
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Sep 8
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: Twin
Color: Black
This mattress box spring did not come fully assembled- contrary to what I thought, it was easy and the instructions were so simple! Sturdiness, height, noise level, weight were on point! and fit easily in my small apartment- no worries about not fitting up the stairs! Everything fit perfectly! Recommend !
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Reviewed in the United States on July 18, 2025 by Caeline alfonso
Size: Queen
Color: Black
This box spring is the perfect size for our queen bed frame, exactly what we needed! Our old frame was due for a replacement, so we turned to Amazon to find a reliable option. This box spring fit flawlessly on our queen-size bed and frame, and I couldn’t be happier with the purchase. The instructions were very easy to follow, making assembly a breeze. I was able to put it together entirely on my own, and the process was straightforward from start to finish. The materials are sturdy and well-built—constructed from heavy-duty metal, it feels durable and long-lasting. I appreciate the solid support it provides for our mattress, ensuring a stable and comfortable sleep. For the price, this box spring exceeded my expectations. If you're looking for an affordable, well-made, and easy-to-assemble option for your queen-size bed, this is definitely worth considering. I’m very satisfied and would recommend it to anyone needing a replacement.
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Reviewed in the United States on April 25, 2025 by Senir
Size: King
Color: Black
Not too difficult to put together. Also be careful because it matters which side of the part is up, and there are no instructions telling you that. Once put together it fits perfectly and works well , you need a common sense
Reviewed in the United States on July 16, 2025 by Orpha
Size: Queen
Color: Black
Easy to assemble, fits my queen frame perfectly, and seems sturdy enough. That being said it definitely slides around, comes off the frame, making the whole bed lean. Really wish there was some way to attach it to the frame or something that made it not slide. Otherwise I would’ve given it a five star
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Reviewed in the United States on June 17, 2025 by Shauna L.A. Close
Size: Twin
Color: Black
Very pleased. Quick shipping. Easy assembly. Minor confusion with directions. A attaches to E, then B, G, J, and H. No C, D or F? Couple extra screws was nice. Another issue- light oil odor that took time to dissipate. Wondering how long the cover will hold up. Happy with how the product added the height and a solid base to the beds. 4.5 stars- rounded to 5.
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Reviewed in the United States on June 19, 2025 by CRB
Size: Twin
Color: Black
Easy assembly, easy to move, also the worst box spring ever, thought it was the mattress, nope tried a couple different mattresses and could feel the supports through the mattress at pressure points. It is terrible. My toddler doesn’t seem to mind, but whenever my husband or I lay down it’s like a jabbing in your hip or back. Would not purchase again.
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Reviewed in the United States on July 9, 2025 by Katherine B
Size: Queen
Color: Black
I got this because we wanted a lower profile bed for our toddler! And boy does this deliver! Easy to assemble and works great! It’s sturdy and has stood up to my kids jumping on the bed like monkeys!
Reviewed in the United States on July 30, 2025 by ChrissyRN
Size: King
Color: Black
It was not difficult to assemble. I chose a 7” thick foundation, but after putting it all together I realized I should have gone with a 5” for my 14” mattress. Other than that, it was perfect.
Reviewed in the United States on August 15, 2025 by Sudhir Ghanta