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.
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 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.
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.
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.
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
Easy to set up
This review was collected as part of a promotion
The base was so easy to set up. It's study, looks nice and supportive.
Review provided by Sealy
The Perfect Mattress
This review was collected as part of a promotion
Second time purchasing this brand of mattress. It is the perfect mattress. Never a back ache, such a supportive but yet most comfortable mattress I've ever slept on. A++++
Review provided by Sealy
Fast accurate delivery
This review was collected as part of a promotion
Ordering was easy, shipping and delivery was as stated. I like that I was able to use mattress same day. I had not tried this particular model and was guessing at what I wanted, but I would say the descriptions were accurate and I got what I expected. Does it miraculously cure all aches and pains? No, but a mattress can only do so much. I am however sleeping much better than I did on my ancient previous mattress. I like the edge firmness, that I can sit on the edge and have it hold up like an old fashioned mattress. It is very firm (relatively loud) when patting the bed to invite up my cats, but once I am laid down it forms comfortably to my body....but not so much that it swallows me - I can still turn over, move about without feeling like I am digging myself out of a snowdrift.
Review provided by Sealy
Pillow adjustable
Not bad is better to sleep with then a regular pillow
Review provided by Sealy
Best sleep of my life!!
This review was collected as part of a promotion
We recently purchased the TEMPUR-LuxeAdapt® Closeout Soft King, and I can honestly say it’s been one of the best purchases we’ve made. It did take about two weeks to fully break in, but once it did—wow. I’ve struggled with shoulder pain for a while, and since sleeping on this mattress, I haven’t felt an ounce of it. The comfort level is incredible while still providing great support for my joints. We didn’t choose the cooling version, but I’ve been pleasantly surprised by how cool and comfortable it stays throughout the night. I wake up feeling genuinely refreshed instead of sore and exhausted. I also love that I can’t feel my husband moving around during the night, which has made a huge difference in my sleep quality. With our old mattress, I was constantly tossing, turning, and trying to get comfortable—but that’s completely gone now. Honestly, I find myself looking forward to getting in bed every night (and sometimes wanting to stay there all day). We’re so thankful we made this purchase!
Review provided by Sealy