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Stearns And Foster Twin Xl High Profile Foundation

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SKU: 50848501

Long-Lasting SUPPORT. Luxurious comfort and support you can't wait to come back to. Shop Now.
Ahhh-mazingly COMFORTABLE. Text describing Stearns & Foster mattresses.
Support
Support

Crafted with high-quality materials, including exclusive hybrid and innerspring technologies that provide long-lasting stability night after night.

Pressure Relief
Pressure Relief

Indulgent memory foam layers adapt to your unique body shape for pressure relief where you need it.

Cooling
Cooling

Sleep comfortably in any season thanks to additional cooling technology like improved airflow and cool-to-the-touch covers.

Intellicoil® Innersprings

The exclusive design of our IntelliCoil® Innersprings offers a unique level of support to every type of sleeper by responding to varying types of pressure for unmatched long-lasting comfort.

A solid surface foundation is engineered to provide years of stationary support. Designed and upholstered to complement our mattresses and your bedroom decor.

Collection

Box Spring

Warranty

10 year limited warranty -

Code F3 - 10/10 -

View Warranty

Color

Gray

Construction

Solid Surface

Foundation height

9 inch

Profile height

High Profile

Upholstery material

Upholstered

Q&A answers generated with AI assistance.

What is the difference between a mattress foundation and a traditional box spring?

While they look similar, a foundation like this Stearns & Foster model provides a much sturdier, rigid base compared to the flexible “give” of a traditional box spring. This solid surface construction is specifically engineered to offer stationary support that prevents your mattress from warping or sagging over time, ensuring the structural integrity of your sleep system.


What are the benefits of choosing a 9-inch high-profile foundation?

This 9-inch high-profile base is ideal for shoppers who prefer a taller, more traditional bed height. A high-profile foundation can make getting in and out of bed more comfortable and creates a more prominent, contemporary aesthetic in the bedroom. It is also an excellent choice if you have a lower-profile mattress but still want to achieve a grand, elevated look.


Is this foundation easy to move in small apartments or homes with tight staircases?

While this is a sturdy, high-profile unit, the Twin XL footprint (39"w x 80"l) is designed to be manageable in tighter spaces. If you are furnishing a master suite with a King-sized mattress but have a narrow staircase or small elevator, using two Twin XL foundations is the most practical solution, as they are much easier to maneuver through doorways and around corners than a single King-sized base.


Does this foundation require any assembly upon delivery?

No assembly is required for this item. It arrives as a fully constructed, solid unit ready to be placed directly onto your bed frame. This is a significant advantage for those who want a quick and seamless setup without the need for tools or complex instructions.


Can I use this foundation with other mattress types like memory foam or hybrids?

Yes. Because this is a solid surface foundation rather than a slatted base, it provides the consistent, uniform support required by modern mattress technologies. This includes memory foam, latex, and hybrid mattresses, which require a flat, non-yielding surface to prevent the materials from dipping or losing their shape over time.


Why should I choose a Twin XL foundation instead of a standard Twin?

A Twin XL foundation measures 80 inches in length, providing five extra inches compared to a standard Twin. This makes it the standard choice for taller individuals, teenagers, or college students in dorm environments. Additionally, the Twin XL size is the necessary component for creating a "Split King" setup when two are placed side-by-side.


How does the construction of this foundation ensure long-term durability?

Based on our expertise in premium sleep systems, this foundation is crafted from high-grade wood and reinforced with a high-gauge steel wire support structure. This robust "Solid Surface" construction is vital for maintaining a completely flat surface, which is often a specific requirement for maintaining full warranty protection on high-end mattresses.

39.00"w x 80.00"d x 9.00"h

4.7 out of 5 stars

Based on 141 ratings
5
87%
4
4%
3
4%
2
1%
1
4%
Bill

Complements the mattress completely

This review was collected as part of a promotion

The foundation works like it’s supposed to..quietly and out of sight.

Review provided by Stearns & Foster

Reviewed On Aug 11, 2026
Tempur

Decent but does have a squeak

This review was collected as part of a promotion

Foundation seems to be decent quality, but does have a squeak when initially getting in bed on the edges. My old Tempur-Pedic foundation did not do that.

Review provided by Stearns & Foster

Reviewed On Jul 27, 2026
Hapy Sleeper

Perfect foundt

This review was collected as part of a promotion

This unsung hero is the perfect match for our brand new Stearns and foster mattress! It’s just the right height, well-made, and quality construction.

Review provided by Stearns & Foster

Reviewed On Jun 28, 2026
Robert S
Verified Buyer

Must have

Purchased On Sep 5, 2023

Must have if you buy the best mattress Sterns Foster

Reviewed On Jun 26, 2026
Great Foundation

Great Foundation

This review was collected as part of a promotion

This 9” Stearns & Foster Flat Foundation is the perfect height to give our new mattress a lift. It fits perfectly in our Queen bed frame. It is well made. Highly recommend this item.

Review provided by Stearns & Foster

Reviewed On Jun 8, 2026