Heavy Duty Foundation | High Profile 8.25″ | Springless Box Spring | Quick Assemble (Queen)




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  • Made With Pride in the USA!
  • All Wood High Profile Construction 
  • Heavy Duty 8.25″ Tall Foundation
  • Better Support: Designed to support Latex Mattresses, Memory Foam, Gel, Coil Spring, Airbeds and Hybrid Mattresses.
  • 14  Extra Wide Bed Slats: Closely spaced for total mattress support and better breathability.
  • Easy Quick Assembly: Approximate assembly time about 15 Minutes. No tools needed.
  • Fits Tight Spaces: Replaces Expensive Split Box Spring. Ideal for tight stairways, hallways, or any spaces where a 1-piece box spring do not fit.
  • Fast & Free Shipping

Learn More Below:


SKU: KDHPfound-hidden-Q Tags: , , , , ,


Quick Assemble Split Box Spring 8.25 Inch High Profile (queen)

1-Piece HP Foundation That Can Even Replace Split Box Springs

Walk it easily through your home and assemble in your bedroom



Compare Ours To Theirs



Ours: We do not sacrifice building materials, strength and durability for profitability. The Heavy Duty,  knocked down, solid wood foundation is built exclusively for STL Beds and our rigid standards. It is the best support system for your hard-earned money. We stand behind our quality and encourage you to compare this to any big brand name boxspring or foundation. Why? Because our heavy-duty wood foundation starts by doubling the total number of wooden slats to 14 you will receive with you new system. Each slat is at least 2 1/2 inch wide and made from Canadian spruce and fir. No matter what size you choose, each corner will bolt securely together with a large carriage bolt to secure the main frame together. Then it is reinforced with two wooden dowel rods. All foundation sizes include a solid wood I-Beam running head to toe that includes extra support blocks for added strength. Compare this to our competition who typically uses nothing more than a 1 3/8  wide, flimsy piece of  wood for center support and with no reinforced support. STL Beds adds additional wood blocks for extra side strength down each side of the foundation for seating.  We only use solid wood to provide the optimal support for your new or or old mattress.


Theirs: The majority of the box springs and foundations built today are stapled together using only 7 to 8 wood support slat. The wooden slats are typically only 1 1/2 inches wide instead of 2.5 inches wide. They include no middle or side strength reinforcement for strong seat edge support. The majority of brand name foundations are supported by a flimsy wire support grid. In fact the only advantage of a system like this is that they are light weight which usually seams like a plus until you realize it is because they give you little substance, shoddy construction all while charging crazy exorbitant costs.



What Kind Of Mattress Can I Use This Box Spring With?

The STL Beds Quick Assemble High Profile 8.25″ tall heavy-duty foundation can be used underneath virtually any type of mattress including memory foam beds, all bed in a box type of mattresses, latex mattresses, coil spring, pocketed coil beds, and hybrid beds. The slats are spaced 2 3/4 apart to provide the necessary support for all of the listed mattresses.


The foundation comes with a luxurious encased cover that completes the look of your mattress set. The neutral white colored cover allows for it to coordinate with virtually any mattress color and design. The zippered encasement fully encases the foundation for a beautifully tailored look.


Your new knockdown mattress support system comes with all the necessary parts for a trouble-free assembly. The estimated time to remove the packaging and assemble is 15 – 30 minutes. The foundation comes in pieces making it a one-person job. Carry the foundation into the desired room piece by piece or in the box. This is a smart alternative to the traditional two-person carry of a traditional bulky box spring. No tools are needed to turn this dream into a reality. Everything you need comes standard.


This Knock Down (KD) Wood Mattress foundation is shipped directly to your house. This springless box spring can be knocked down and moved at your convenience, making it easier to move than your ridged one-piece box spring or costly split box foundations. It is ideal for tight spaces such as upstairs where your traditional foundation or box spring may have fitment issues.



5/5 (3 Reviews)

Additional information

Weight 94 lbs

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Product Features

Features & Benefits:


  • Made with pride in the USA!
  • Solid Wood- all wood construction with zero composite woods like particle board or flimsy metal tabs that bend easily.
  • Standard Foundation Height– 8.25” the most popular height. Looks good. The most popular height for entry and exiting.
  • Personal Mobility– elevates mattress to a more normal bed height. When determining finished bed height be sure to add your frame, mattress, and foundation heights together. This is the point where you need to determine if this finished height be good for: Kids so they can easily climb into bed with you? Aging pets that won’t have to climb so high. Elderly will getting in and out be a problem or could the fall out of bed?
  • Ease Of Moving– move it assembled or take it apart for a lightweight moving that can be done be one person with ease. When unassembled this foundation can fit through very tight spaces and even through low overhangs where 1-piece boxsprings normally will not fit. Foundation can be assembled in the bedroom.
  • Even Mattress Support– consistent and even weight distribution for better support and longer mattress life.  Helps prevent that annoying middle mattress ridge  associated with two piece foundations.
  • Wider Slats & More Of Them– 14 solid wood 2 1/2-inch-wide slats includes head and foot end wood end frames with block reinforcement.
  • Closely Spaced Slats– distance between each wood slat 2 3/4
  • Bolted Together– bolted together in each corner with carriage bolt. Also includes wooden dowel rods for additional strength.
  • Less Movement– no bouncy coil springs for unmatched motion isolation so sleeping partner is not disturbed during the night.
  • Solid I-Beam Construction– heavy duty head to toe center support included with each and every foundation size. Includes extra support blocks.
  • Stronger Seat Edge Support– extra wood block supports down each side for reinforcement for sitting when entering, exiting the bed. Includes All Necessary Hardware– (no tools required for assembly)
  • Fits All Types Of Bed Frames– Hollywood, steel, platform, beds with headboards, beds with headboards and footboards.
  • Weight capacity– can support up to 1500 pounds
  • Nightstand access– helps put your nightstand within reach for better access and ease of use.
  • Zippered fabric cover: this cover installs easily. Simply pull over foundation and zip it closed.

Heavy Duty Quick Assemble Dimensions, & Weight

Queen Size


  • Queen- L: 8” W:60” H: 8.25” Weight 83 lbs. Queen Ships in one box. When assembled Queen is a one-piece foundation.
  • Cardboard Shipping Box Measures Approximately 12 x 13 x 77 (This is NOT the completed size when assembled. Measurement is for the pieces packaged / shipping dimensions)

This is a great substitute for a Split Queen Box Spring and works the same way.


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