Kingsdown Twin Xl High Profile Foundation
SKU: 50883478
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
4.1 out of 5 stars
This is my second tempur topper, highly recommend
This review was collected as part of a promotion
Years ago I bought the tempur topper and loved it. Changed mattress sizes and tried to go with a cheaper version from an online retailer, that was a waste of time and money. Nothing compares to the tempur topper. It’s soft and cooling and easy to wash the removable cover.
Review provided by Sealy
Pain in the neck…
This review was collected as part of a promotion
When you first lay your head dow, it feels like you’ve laid on a rock. Slowly and immediately your head starts to sink until you’re now an inch from your mattress with 2 rocks on the side of your head. Purchased this on black friday and tried it for a month and it caused me so much head, neck, shoulder pain that I was in tears. Finally gave up on it and gave it to my husband who hates it equally as much. The description for this pillow was med- firm. It’s NOT firm or supportive. The cooling feature is nice, which is why it earned a star. We have 2 Tempur-pedic pillows from when we purchased our mattress 10 years ago. They’re wonderful and firm and we wanted two new ones and they do not make them like this anymore.
Review provided by Sealy
Best topper we hae ever had
This review was collected as part of a promotion
We have tried many different toppers and this one is the only one we both love. It is comfortable for the side sleeper and the back sleeper.
Review provided by Sealy
Run, don’t walk to buy one of these!`
We bought two twinXL’s that sync together with our new king mattress (other brand). The mattress is unbelievably comfortable, but my wife and I both agree the biggest improvement to our new sleep system was these bases. We love the adjustment, we have it setup for watching TV for an hour before bed, and then press a button and go to your custom sleep position 9feet and head slightly raised). We all spend a quarter of our lives in bed, why not spend a little extra and make it worth your while! It actually adjusts if you snore, gives you a daily sleep score, cell phone can be the remote and the AI is helping us learn about how important a consistent sleep schedule is. I used to sleep with four pillows, now I sleep with one. Love the bases..
Review provided by Sealy
Goes completely fla
These pillows were on sale and had high reviews so I bought a set for myself and my daughter. We both had the same complaint.. once you lay on the pillow for a few minutes if you move around at all, the entire thing goes completely flat and you might as well not have a pillow at all. This might be the worst pillow I have ever slept on.
Review provided by Sealy