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Sleep Master 9 inch High Profile BiFold Box Spring, Queen

  • Based on 3,900 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Sunday, Feb 8
Order within 17 hours and 12 minutes
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Size: Split Queen


Features

  • Sturdy Steel Frame With Poly Jacquard Cover
  • AS SIMPLE AS UNFOLD & UNWIND - Requiring no tools and zero tedious assembly, the innovative No Assembly box spring requires only unfolding to become bedtime ready; the hardest part will be taking it out of the box
  • DURABLY ENGINEERED - Durable steel is used to construct the interior framework of this reliable foundation; twin supports a maximum weight capacity of 350 lbs, while aother sizes can support up to 700 lbs; Queen, King and Cal King sizes are split versions
  • HIGH PROFILE DESIGN - A 9 inch height is perfect for shorter mattresses or for those who enjoy their bed higher off the floor
  • 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

Believe it or not, we’ve made the box spring more functional, more durable, and dare we even say, fun! Our No Assembly Box Spring is not your average foundation. Its folding design not only makes set-up insanely easy, but it also comes in handy on moving day, maneuvering easily in and around tight hallways and corners. What’s more, it features a structure made of thick and durable steel, meaning that frames and mattresses may come and go, but this box spring will be with you for the long haul. Once unboxed, this brilliant foundation practically assembles itself by taking shape once unfolded. Essentially, deciding where to place the bed will take longer than setting up this box spring. Backed by both our 5-year worry free warranty and hundreds of positive customer reviews, this box spring is about as easy as decisions get.

Brand: Zinus


Size: Split Queen


Product Dimensions: 79"L x 59.5"W x 9"Th


Item Weight: 48.77 Pounds


Item Firmness Description: Firm


Top Style: Tight Top


Cover Material: Poly Jacquard


Fill Material: Steel


Weight Limit: 700 Pounds


Special Feature: Foldable


Product Dimensions: 79 x 59.5 x 9 inches


Item Weight: 48.8 pounds


Manufacturer: Zinus - DROPSHIP


Item model number: SM-SC-BIFD-9Q


Is Discontinued By Manufacturer: No


Thickness: 9 Inches


Fabric Type: Sturdy Steel Frame With Poly Jacquard Cover


Refill: Steel


Maximum recommended load: 700 Pounds


Finish types: Painted


Care instructions: Spot Clean Only


Assembly required: Yes


Warranty Description: 5-year warranty.


Batteries required: No


Included Components: Assembly Instructions, Hardware


Age Range Description: Adult


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Feb 8

Yes, absolutely! You may return this product for a full refund within 90 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.

Top Amazon Reviews


  • Perfect Mattress Foundations!!
Size: Split Queen
This is the perfect mattress foundation. Easy to move into or around your house, especially for downstairs bedrooms, or upstairs for that matter ... if you need to navigate a stairway, these are the mattress foundations for you!! Come folded with the cover already installed, but unzipped. Having the cover unzipped allows you to unfold the metal frame without having to remove the covers. Simply carry over to the bed frame, unfold, zip the cover and put into place ... BOOOM! your ready for the mattress!! Could absolutely not be more convenient and easy to assemble and use. Lastly, provides firm support for your mattress and provides that extra hight to the mattress that makes it more comfortable to sit on the bedside, giving you a better hight for making the bed, etc. I use them in two bedrooms and love them. Very highly recommended. ... show more
Reviewed in the United States on February 24, 2024 by Ed B.

  • Love it!
Size: Split Queen
Very good quality and easy set up! We love the fact it folded so it was a breeze to get upstairs ! I would definitely buy this product again!
Reviewed in the United States on August 4, 2025 by Harllee

  • One year owner
Size: Split Queen
Had an issue getting a full size box spring through our house; these solved the problem! They are super lightweight and easy to move, easy to setup and come super compact. No issues after one year of use; recently moved our bed and they still looked brand new!
Reviewed in the United States on August 14, 2025 by Daniel G

  • Sturdy and Well Built
Size: King
I originally bought a 'Used-Like New' version but sent it back because our versions of 'Like New' didn't align. The box springs were dirty and both frames were badly bent as if a forklift ran into in thewarehouse. But even in their bent state, I could see these box springs were very sturdy and well made. More solid than my old wooden box springs and easier to manage when folded. So once they were returned, it was a very easy decision to repurchase them brand new. ... show more
Reviewed in the United States on September 20, 2025 by M. Downey

  • Perfect box spring
Size: Split Queen
Not sure why all box springs arent built like this. Easy to put together and perfect box spring
Reviewed in the United States on November 15, 2025 by Cody

  • Very Satisfied
Size: Split Queen
There was a little delay with delivery and that’s why my overall rating was a 4. The box springs are wonderful. They have made a big difference in comfort and sturdiness of my bed. I highly recommend this product. The delay in delivery was handled in a timely manner. Amazon customer service representatives were very helpful. I’m so glad I made this purchase. ... show more
Reviewed in the United States on March 28, 2023 by alice d davis

  • Easy peasy box springs
Size: Split Queen
Wow. This box springs was so easy! We have a small town house. We had difficulty moving a regular box springs we had from one city to our current house so I saw this on Amazon. It looked way too easy to be true. But it totally was unbelievably easy to get in the front door and up the staircase. No problem maneuvering around the landing and into the bedroom. 5 minutes to unbox and 5 minutes to assemble. It fit the frame perfectly. I’m 68 and could have easily done it myself after watching the 1 min video. It’s even labeled, “top” and “bottom”. Waiting on the new mattress to test it out. ... show more
Reviewed in the United States on April 23, 2025 by dmw

  • Buy This!
Size: Split Queen
Awesome product and so easy to unpack and install. 100% satisfied.
Reviewed in the United States on October 9, 2025 by Holly Michele Canter

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