Kingsdown Twin Xl High Profile Foundation
Will It Fit?
SKU: 50883478
Handcrafted in the United States, our master artisans are committed to better sleep through exceptional craftsmanship.
Every square inch of a Kingsdown mattress is handcrafted with superior materials, not just the parts you can see and touch.
Every single mattress is tested and certified before it leaves our hands to ensure consistent quality and accurate support.
You'll Love Kingsdown
Kingsdown mattresses are designed to help regulate temperature for cooler, more comfortable sleep.
Individually wrapped coils decrease motion transfer, and select models feature an added buffer that runs the length of the mattress to mitigate partner disturbance.
Kingsdown mattresses are highly rated with over 20,000 reviews, averaging 4.7 stars and a 96% referral rate.
Kingsdown foundations are meticulously hand assembled using sustainably sourced Canadian Spruce, which is exceptionally durable. Each piece of lumber is not only heat-treated, but kiln-dried, which improves the performance of the wood over time. Each wooden slat is placed more closely together and cut a full inch wider than most manufacturers to provide a sturdier base.
Collection
Box Spring
Warranty
10 year limited warranty -
Code J -
View WarrantyColor
Black
Foundation height
9 inches
Pattern
Solid
Upholstery material
Fabric
Q&A answers generated with AI assistance.
Why is a solid foundation often preferred over a traditional box spring?
Unlike a traditional box spring that uses flexible wire coils, this solid wood foundation provides a completely flat, non-yielding surface. This rigid support is essential for modern memory foam and hybrid mattresses, as it ensures they stay perfectly level to provide correct spinal alignment and prevents the internal mattress materials from shifting or warping.
What is the benefit of a "high profile" 9-inch foundation?
A 9-inch high-profile foundation provides a traditional bed height, making it easier to get in and out of bed compared to lower-profile options. This height is ideal for standard bed frames and is a popular choice for larger master bedrooms where a taller bed profile creates a more substantial, elevated aesthetic.
Does this foundation require home assembly?
No, this foundation is meticulously hand-assembled by craftsmen before it reaches your home. It arrives fully built and ready for immediate use, allowing you to complete your bedroom setup without the need for tools or the hassle of complex instructions.
Why is kiln-dried Canadian Spruce used in this foundation’s frame?
This foundation is crafted from sustainably sourced Canadian Spruce that has been both heat-treated and kiln-dried. The kiln-drying process is a critical quality step that removes deep-seated moisture from the wood, significantly reducing the risk of warping, shrinking, or cracking over time. This expertise in material preparation ensures the frame remains structurally sound and silent throughout its lifespan.
How does the slat construction provide better support for a mattress?
To provide a sturdier base than standard models, the wooden slats in this foundation are cut a full inch wider and placed more closely together. This increased surface area offers superior reinforcement for your mattress, helping to prevent the sagging and dipping that can occur with less robust support systems, thereby extending the life of your mattress.
Can two of these foundations be used together for a split king bed?
Yes, two Twin XL foundations are the standard requirement for a King or Split King mattress setup. At 80 inches long, they provide the necessary extra length for "XL" mattresses. Placing two side-by-side creates a stable, 78-inch wide base that is much easier to navigate through narrow stairwells or apartment doorways than a single-piece king foundation.
39.00"w x 80.00"d x 9.00"h
4 out of 5 stars
Too slick and dtretchy
Yes, the sheets feel soft and cool, but they are way too stretchy and slick! I keep sliding off the bed while I am trying to climb on the bed or sit on the edge of the bed to dress. The sheets stretch so much that they bunch up around me! I much prefer a high thread-count woven cotton percale sheet, that does not stretch. I had to go outside the company to buy sheets.
Review provided by Sealy
Quality
This review was collected as part of a promotion
Very stable and good quality.
Review provided by Sealy
Comfort
This review was collected as part of a promotion
Very comfortable and practical.
Review provided by Sealy
Comfortable sheets
This review was collected as part of a promotion
These sheets fit well and are comfortable!!
Review provided by Sealy
Quality and comfort
This review was collected as part of a promotion
The topper changed our whole sleep experience for the better. Easy to attach and it stays in position.
Review provided by Sealy
