Beautyrest Black Split King High Profile Foundation Pair (2 Twxl)
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SKU: 5903780P
Discover Beautyrest Black®
Triple-Stranded Pocketed Coil® Technology offers our most advanced, individualized support + motion separation for every sleeping position.
Ventilated, Self-Response™ Latex®, designed to maximize airflow while conforming to your body for responsive pressure relief, combines with contouring memory foams and premium materials to provide luxurious comfort. *Available in select models
Sleep Climate™ Technology works with Micro Diamonds™ Memory Foam, a premium foam infused with diamond particles that is designed to help transfer heat away from the body, for an optimal sleep. *Available in select models
Specifically designed to work together with your Beautyrest Black mattress, this foundation offers long-lasting support and reduced motion for restful night's sleep.
Collection
Box Spring
Warranty
10 year limited warranty -
View WarrantyUpholstery color
Gray
Upholstery pattern
Geometric
Q&A answers generated with AI assistance.
What are the benefits of a high-profile foundation versus a low-profile one?
This foundation features a 9-inch "high profile" height. Choosing a high-profile base is ideal for shoppers who prefer a more traditional, elevated bed height or those who have a shorter headboard and want to ensure the mattress sits at a prominent level. It also makes getting in and out of bed easier for many individuals compared to lower-profile alternatives.
How does this foundation improve mattress support and durability?
Specifically engineered to complement the Beautyrest Black mattress line, this foundation provides a flat, rigid surface that is essential for modern mattress construction. By offering consistent, non-yielding support, it helps prevent the mattress from warping or sagging over time, which is often a requirement for maintaining your mattress warranty and ensuring long-term comfort.
How does a foundation contribute to reducing motion transfer during sleep?
While the mattress handles much of the contouring, the foundation provides the stable "anchor" for the bed. This Beautyrest Black foundation is built to reduce overall motion, meaning when a partner moves or gets out of bed, the base remains solid and unmoving. This stability works in tandem with the mattress's pocketed coils to isolate movement and promote a more restful, undisturbed sleep.
Is this foundation suitable for homes with tight entryways or narrow staircases?
Yes, this is one of the primary advantages of a split foundation. If you live in an urban apartment, a historic home with narrow hallways, or have a bedroom accessible only by a tight staircase, these two Twin XL units can navigate those spaces with ease. This design ensures you can enjoy a king-sized sleep system without the logistical headache of fitting a single large king base through small openings.
Does this foundation require assembly once it's delivered?
No customer assembly is required for this unit. It arrives ready to be placed directly into your bed frame or onto a compatible support system. Based on our standards for high-end bedding, this ensures the structural integrity of the foundation is maintained exactly as intended by the manufacturer, providing a professional-grade sleep surface from day one.
What is a "split king" foundation, and why does it come in two pieces?
A split king foundation is essentially a king-sized base divided into two separate Twin XL units, each measuring approximately 80"L x 39"W. This Beautyrest Black pair is designed this way to provide the same total surface area as a standard king bed (80"L x 78"W) while offering significantly better maneuverability during delivery and setup.
78.00"w x 80.00"d x 9.00"h
