Kingsdown Twin Xl High Profile Foundation
SKU: 50805551
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
Pattern
Solid
Profile height
High profile
Upholstery material
Upholstered
Q&A answers generated with AI assistance.
How does the slat design of this foundation improve mattress support?
To provide a sturdier and more reliable base, the wooden slats in this foundation are cut a full inch wider than the industry standard and placed closer together. This dense slat configuration creates a more uniform support surface, which is critical for preventing the sagging or "sinking" that can occur with modern mattresses. By minimizing the gaps between slats, the foundation helps extend the lifespan of your mattress and ensures consistent comfort across the entire surface.
Is a Twin XL foundation suitable for a college dorm or a small apartment?
Absolutely. The Twin XL size (80"L x 39"W) is the standard for most college dormitories and is an excellent choice for studio apartments or guest rooms where space is at a premium. Because this foundation is meticulously hand-assembled with durable spruce and features an upholstered finish, it is built to withstand the rigors of frequent moves and the high-traffic lifestyle of a student or urban dweller.
What is the benefit of a high-profile mattress foundation?
A high-profile foundation, like this 9-inch model, is the traditional choice for those looking to add significant height to their sleep set. This is particularly beneficial if you prefer a taller bed that is easier to get in and out of, or if you want to achieve a classic, commanding aesthetic in your bedroom. Additionally, the extra height can provide a more comfortable seating level when you're dressing or relaxing on the edge of the bed.
Can I use this foundation with a memory foam or hybrid mattress?
Yes, this foundation is an ideal partner for memory foam and hybrid mattresses. Based on our expertise, these heavier, more flexible mattress types require a completely flat and rigid support system to perform as designed. The reinforced slat construction of this model provides the necessary "no-flex" support that protects the mattress core and ensures your warranty requirements for a proper support system are met.
Why is kiln-dried Canadian Spruce used in this foundation's construction?
The use of sustainably sourced Canadian Spruce ensures exceptional durability and strength. By kiln-drying and heat-treating the lumber, we remove excess moisture that can lead to warping, splitting, or squeaking over time. This advanced preparation process results in a stable, high-performance frame that maintains its structural integrity much longer than standard untreated wood bases.
How should I maintain and clean an upholstered mattress foundation?
Based on our furniture care guidelines, we recommend regular vacuuming with an upholstery attachment to remove dust and allergens from the fabric surface. For minor spills or spots on the solid black upholstery, you should blot the area immediately with a clean, soft cloth and a solution of mild soap and warm water. Avoid using harsh chemicals or saturating the fabric, as this can damage the upholstery and the structural wood underneath.
39.00"w x 80.00"d x 8.50"h
4.1 out of 5 stars
Side Sleeper
This review was collected as part of a promotion
While this pillow was recommended for side sleepers I would not recommend it. I was given two pillows when I bought my mattress that I can’t seem to replace. They were ultimately soft and perfect for a side sleepers. If you read in bed, it is a perfect pillow to put behind you and the headboard.
Review provided by Sealy
SUPER SLEEPING
This topper is everything it is advertised and more. We are getting better sleep and rest, perhaps a few less aches and pains! We were concerned about the smell that usually come with foam toppers, NONE. We did let it breathe overnight and inflate fully before we used it. Try it, you will be glad you did.
Review provided by Sealy
Too hard!
This review was collected as part of a promotion
This pillow is heavy and too hard. My neck hurt after sleeping on it.
Review provided by Sealy
Deflates into a pancake
This pillow deflates in a matter of minutes. I was hoping this would be a firm and sturdy pillow, but my head literally melts into the pillow offering no neck support whatsoever. We had to use other pillows underneath the temper-pedic so we'd get a least a little bit of neck support, otherwise might as well sleep with no pillow. Only pro is that it is cooling.
Review provided by Sealy
Happy Bed, Happy Marriage!
This review was collected as part of a promotion
The joy of this experience absolutely started in the store when we had very helpful customer service from Sandy. She walked us through all the different variations described benefits and perks and discounts that might be available by bundling different services. We ended up going full out because of my husband‘s back issues and my general ability to not sleep well. A split king adjustable base means we both get to sleep in the position that is most comfortable to us we can have different vibration patterns and both enjoy a beautiful night sleep without competing for the others space. The installation was seamless. They came in and even picked up after themselves. They made sure everything worked and it has been wonderful ever since. When I say happy bed, happy marriage I mean it! We are both sleeping better than we ever have in our lives, waking up is easier, we are more refreshed for our days, and life just seems much better because of this bed.
Review provided by Sealy

