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    Flat Foundation

    Engineered to support your Stearns and Foster® mattress with a perfectly solid, flat surface.

    Profile
    $315.00
    Free Delivery — Arrives in 2-3 Weeks
    • Designed in the USA
      Crafted with care and to last

    • Designed in the USA
      Crafted with care and to last

    • Free Shipping
      Arrives via UPS Ground Delivery



    Fashion
    + Function

    The perfect mattress isn't complete without the perfect foundation. Our flat foundations are designed to take the place of a traditional box spring and can be placed directly on your existing bed frame.

    SF Lux Estate mattress on a foundation
    SF Lux Estate mattress on a foundation

    Fashion


    + Function

    The perfect mattress isn't complete without the perfect foundation. Our flat foundations are designed to take the place of a traditional box spring and can be placed directly on your existing bed frame.

    SF Mattress on a foundation

    CRAFTED TO

    Complement



    Constructed with the finest textiles, our Stearns & Foster® foundation is designed to enhance the look and feel of your mattress.


    Why You'll Love It

    SF Lux Hybrid mattress on a foundation



    Perfect Match

    Our solid surface foundation is crafted to provide years of stationary support. Designed and upholstered to complement our mattresses and your bedroom décor.

    Why You'll Love It

    SF Lux Hybrid Mattress on a foundation Mobile


    Perfect Match

    Our solid surface foundation is crafted to provide years of stationary support. Designed and upholstered to complement our mattresses and your bedroom décor.

    An image showing the difference in height between the 5 and 9 inch foundations


    Custom Comfort

    Our foundations are available in a 9” height that matches a traditional box spring and a lower 5” profile for a more modern look that will easily fit through more narrow stairways.



    Custom Comfort

    Our foundations are available in a 9” height that matches a traditional box spring and a lower 5” profile for a more modern look that will easily fit through more narrow stairways.

    SF_flatbase2.original
    SF mattress on a foundation

    Crafted


    For you

    Constructed with the finest textiles that enhance the look and feel of your mattress, our Stearns & Foster® Foundation is designed to complement your style.

    Looking to Upgrade Your Bed?

    Get a $200 instant gift when you purchase an Ease Base with your mattress. The Ease Base adds unlimited adjustable positions to help you sleep soundly at night and enhance your sleep sanctuary.

    $200 Instant Gift with an Ease Base

    Benefits:

    • Unlimited Head and Foot Positions
    • Wireless Remote Control
    • Zero Gravity Preset Position
    • Free Delivery and In-Home Set-Up

    Shop Now

    Looking to Upgrade Your Bed?

    Get a $200 instant gift when you purchase an Ease Base with your mattress. The Ease Base adds unlimited adjustable positions to help you sleep soundly at night and enhance your sleep sanctuary.

    $200 Instant Gift with an Ease Base

    Benefits:

    • Unlimited Head and Foot Positions
    • Wireless Remote Control
    • Zero Gravity Preset Position
    • Free Delivery and In-Home Set-Up

    Shop Now

    Product Specifications

    Size Availability:

    Twin: 74L" x 38W"

    Twin Long: 79L" x 38W"

    Full: 74L" x 53W"

    Queen: 79L" x 60W"

    King: 79L" x 38W" (each piece/ 2-piece foundation)

    CA King: 84L" x 36W" (each piece/ 2-piece foundation)

    Split Queen: 79L" x 30W" (each piece/ 2-piece foundation)

    Split King: 79L" x 38W" (each piece/ 2-piece foundation)

    Split CA King: 83L" x 36W" (each piece/ 2-piece foundation)

    Product Weight:

    High Profile 9"

    Twin: 31 lbs
    Twin Long: 35 lbs
    Full: 42 lbs
    Queen: 48 lbs
    King: 70 lbs (35 lbs each piece)
    CA King: 70 lbs (35 lbs each piece)
    Split Queen: 60 lbs (30 lbs each piece)
    Split King: 70 lbs (35 lbs each piece)
    Split CA King: 70 lbs (35 lbs each piece)

    Low Profile 5"

    Twin: 25 lbs
    Twin Long: 29 lbs
    Full: 38 lbs
    Queen: 46 lbs
    King: 58 lbs (29 lbs each piece)
    CA King: 58 lbs (29 lbs each piece)
    Split Queen: 58 lbs (29 lbs each piece)
    Split King: 58 lbs (29 lbs each piece)
    Split CA King: 56 lbs (28 lbs each piece)

    Warranty & Returns:

    Warranty: Your Stearns & Foster foundation is covered under a 10 year limited warranty

    Return Policy: This product cannot be returned and the 90-Night Trial does not apply.

    Care Instructions:

    For more information on how to properly clean and care for this product, please visit our Product Care page.

    Rated 4.768421052631579 out of 5 stars

    Read Our Reviews

    Rated 4.768421052631579 out of 5 stars
    95+ REVIEWS
    AVERAGE OF 4.8 STARS

    Filter Reviews

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    Rating
    (3,396)
    (458)
    (245)
    (185)
    (382)
    Rated 5 out of 5 stars
    5
    Estate Collection – Estate Pillow Top Firm
    May 16, 2025
    Source:
    Stearns & Foster
    Sweepstakes

    Sleep Comfortably and Peacefully

    May 16, 2025
    Sleeping in Santa Fe, Santa Fe, NM
    We purchased the Stearns and Foster Pillowtop Estate Firm and love the support that it gives our sleep. The comfort level is not too firm as the pillowtop adds just enough softness for a little give. We are 2 different types of sleepers, one is a side sleeper who tends to move frequently through the night while the other is primarily a stomach sleeper. We are both sleeping well on the new mattress; feeling motion when one or the other moves around throughout the night is also greatly reduced. One thing that influenced our decision was the side support when sitting on the side of the bed. Too many mattresses sink when sitting on the side, but this one supports with little sinking.
    Rated 5 out of 5 stars
    5
    Reserve Collection – Reserve Pillow Top Soft
    May 15, 2025
    Source:
    Stearns & Foster
    Sweepstakes

    Best sleep I’ve had in years

    May 15, 2025
    Wanda , Lake Monticello Va
    The mattress edge has good support and makes it easier for My handicapped husband to get in and out of bed. For me the pillow top helps with aches and pains and sleep is so much better.
    Rated 5 out of 5 stars
    5
    EASE® Power Base
    May 15, 2025
    Source:
    Stearns & Foster
    Sweepstakes

    Don't know what we did without it!

    May 15, 2025
    Thrilled Customer, Central Nebraska
    We have had this bed for about a month now and don't know what we did before. We purchased it with the Stearns & Foster® Lux Estate Soft Pillowtop Mattress - King and cannot stop talking about how much we love it. We are now sleeping through the night without waking up to have to switch positions because we are that comfortable all night long. My husband used to have to go out to the recliner every night. That has also stopped. It has helped with my snoring as well. Would highly recommend to anyone considering this product.
    Rated 5 out of 5 stars
    5
    Lux Estate Collection – Lux Estate Pillow Top Soft
    May 15, 2025
    Source:
    Stearns & Foster
    Sweepstakes

    Best mattress we have ever owned!

    May 15, 2025
    Thrilled Custmer, Central Nebraska
    We have had this bed for about a month now and don't know what we did before. We purchased it with the EASE Power Base and cannot stop talking about how much we love it. Sleeping through the nice without waking up to have to switch positions because we are that comfortable all night long. My husband used to have to go out to the recliner every night. That has also stopped. It has helped with my snoring as well. Would highly recommend to anyone considering this product.
    Rated 5 out of 5 stars
    5
    Reserve Duet – Reserve Duet Tight Top Firm
    May 9, 2025
    Source:
    Stearns & Foster
    Sweepstakes

    Our sterns and foster 17"plus euro pillow top is awsm!!!

    May 9, 2025
    MJ, Joshua Tree CA
    Oh the comfort and body curving pillow top is incredible! True love at first sleep;)
    Rated 5 out of 5 stars
    5
    Estate Collection – Estate Tight Top Medium
    May 9, 2025
    Source:
    Stearns & Foster
    Sweepstakes

    Comfortable and supportive

    May 9, 2025
    GTBill, Eatonton
    Very comfortable and supportive.


    BUILD THE BED OF YOUR DREAMS

    SF Reserve mattress on a flat foundation in a styled room

    Discover the handmade details and finest materials that make our mattresses truly exceptional.

    Shop Mattresses

    Lux Estate Mattress in a styled room raised on a base

    Upgrade to custom comfort with our Ease® Power Base—for a seamless sleep experience.

    Shop Power Bases

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