
SKU: 51005556
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
Low profile
Q&A answers generated with AI assistance.
How should I clean and maintain the upholstered exterior of the foundation?
To maintain the upholstered finish, our experts recommend regular vacuuming with an upholstery attachment to remove dust and allergens. For minor spills or stains on the fabric, you can lightly spot clean using a soft cloth with mild soap and water. Always ensure the area air dries completely to protect the premium Canadian Spruce frame underneath.
What are the benefits of choosing a 3" low-profile foundation over a standard one?
This 3-inch foundation is specifically designed for modern, thicker mattresses. By lowering the overall height of your sleep set, it creates a sleek, contemporary look and makes getting in and out of bed more accessible. It is an ideal choice for households that want the robust support of a traditional base without the excessive height of a standard foundation.
Is this foundation suitable for a memory foam or hybrid mattress?
Yes. Modern foam and hybrid mattresses require a very stable, flat surface to prevent sagging. This foundation features wooden slats that are placed more closely together and cut a full inch wider than the industry standard. This design provides a sturdier, more uniform support system that helps maintain the structural integrity of your mattress and protects your warranty.
Is this foundation a good option for a college dorm or a small apartment?
This is an excellent choice for students and urban dwellers. Its Twin XL dimensions are tailored to the "Extra Long" twin beds standard in most college dorms. Additionally, the slim 3-inch profile and fully assembled design make it much easier to maneuver through narrow hallways, small elevators, and tight staircases than a bulky, standard-height box spring.
How does the wood construction of this foundation ensure long-term durability?
This foundation is meticulously hand-assembled using sustainably sourced Canadian Spruce. To ensure longevity, the lumber is both heat-treated and kiln-dried. This specialized drying process removes moisture from the wood, preventing it from warping, shrinking, or cracking over time, which ensures the base remain level and stable for years to come.
Can two of these foundations be used together for a king-sized bed?
Absolutely. This Twin XL foundation is the standard building block for a split-king setup. By placing two of these units side-by-side, you create the exact dimensions of a standard King bed (78"W x 80"L). This is a highly functional solution for those using two separate mattresses for customized comfort or for easier transport into homes with narrow entryways.
39.00"w x 80.00"d x 3.00"h

4.1 out of 5 stars
Very Uncomfortable
This review was collected as part of a promotion
While the pillow cooling feature is nice, it unfortunately hurt my neck for several days after using it. Disappointed they cannot be returned.
Review provided by Sealy
Perfect for us.
This review was collected as part of a promotion
We have an old Tempurpedic mattress that we love. We were thinking it was about time to get a new one but we didn’t think we could get anything like the original and didn’t know which model to get. Updating felt like a risk. Then I saw the topper. It seemed like a low cost way to experience the current product. We purchased the topper and found it very comfortable. It was the perfect addition to our current Tempurpedic. The fit is great and the straps to hold it in place do a reasonable job. Having a better idea of how the current technology feels, we will probably refresh in the future. But, now with the topper, we don’t have a sense of urgency, nor do we feel a great need. It has proven to be a great addition for us as a retired couple.
Review provided by Sealy
Not impressed with the firmness
This review was collected as part of a promotion
Was a little short on the sides, ordered Cal King which is what it is and the sides were short about 2-3 inches on each side.
Review provided by Sealy
Comfortable and Quality
This review was collected as part of a promotion
Very smooth and cool to the touch every night I jump into bed. Even after many washes it keeps its comfort and coolness.
Review provided by Sealy
Quality
This review was collected as part of a promotion
Very nice pillow. Definitely shaped to fit the head more naturally. Just a bit of a change for me, a bit of discomfort and I'm still getting used to it.
Review provided by Sealy


