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.
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.
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.
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.
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.
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
Worst mattress ever.
Worst mattress and customer service ever. Do not recommend. Mattress started collapsing and cause a tiny pen size stain they will not warranty it! I will make sure anyone I know does not ever purchase a sterns mattress.
Review provided by Sealy
A Miraculous Tool!
This review was collected as part of a promotion
Two months before having my lower back fused, this cushion allowed me to sit at a desk pain-free throughout the workday. I’d recommend for anyone who can’t tolerate sitting for longer periods. .
Review provided by Sealy
Mattress topper
This review was collected as part of a promotion
The product arrived in a timely manner. With it being so cold in NH, the topper was a bit frozen which was fine. I just laid it out to warm up and then was able to put on bed after 24 hrs. Packaging was great. It is well made and fits the bed perfectly. Tempur-Pedic is my only mattress that I will sleep on.
Review provided by Sealy
Exceptional Service and Exceptional Product
The Ergo products work as advertised. Everything from the purchase at the TempuPedic store in Palm Desert, to the shipping process, installation process and experience were exceptional. Thank you Margot for the excellent follow up throughout the process. I will buy from this store again - my second wonderful experience.
Review provided by Sealy
Great Quality Product
This review was collected as part of a promotion
Really like the quality of this product and also a great design.
Review provided by Sealy

