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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
    (3,467)
    (463)
    (247)
    (186)
    (384)
    Rated 5 out of 5 stars
    5
    Estate Collection – Estate Pillow Top Firm
    Jul 21, 2025
    Source:
    Stearns & Foster
    Sweepstakes

    Support and comfort

    Jul 21, 2025
    Impressed, San Antonio, Texas
    We've been sleeping on our new Estate Firm Pillowtop mattress for about a month now and we're yet to find a downside. It's completely supportive, yet the top makes it comfortable enough to sleep on your side. This type of mattress came as a recommendation of a chiropractor, and it turned out to be just right. Bonus: my husband sleeps on the very edge of the bed, and while most mattrasses tend to slope down, this one has coils all the way to the edge, it's fantastic!
    Rated 5 out of 5 stars
    5
    Estate Hurston
    Jul 20, 2025
    Source:
    Stearns & Foster

    So far so good

    Jul 20, 2025
    Kentuckian, Georgetown, KY
    Replaced a mattress that was already hurting my wife's back after four years. She sleeps on her side, and she's delighted with her first night on the Stearns. Her back felt better as soon as she lay down. No complaints.
    Rated 5 out of 5 stars
    5
    Lux Estate Collection – Lux Estate Tight Top Medium
    Jul 20, 2025
    Source:
    Stearns & Foster

    EXCELLENT

    Jul 20, 2025
    RSB4969, Colorado
    A wonderful mattress, the best of the best. I highly recommend this mattress for seniors.
    Rated 5 out of 5 stars
    5
    Estate Collection – Estate Tight Top Firm
    Jul 20, 2025
    Source:
    Stearns & Foster
    Sweepstakes

    Second S&F

    Jul 20, 2025
    Happy Sleeper with 3 furry companions, East Tennessee
    This is my second S&F mattress and foundation (previous was box springs). My first is about 20 years old and is still fine but it’s being used in the guest room. I love their products and will get another if I outlive its usefulness.
    Rated 5 out of 5 stars
    5
    Lux Estate Hybrid Pollock – Luxury Cushion Firm
    Jul 20, 2025
    Source:
    Stearns & Foster

    Love the mattress

    Jul 20, 2025
    Evette Mikhail, East Brunswick
    I bought it for my back and I am very satisfied
    Rated 5 out of 5 stars
    5
    Lux Estate Collection – Lux Estate Tight Top Medium
    Jul 20, 2025
    Source:
    Stearns & Foster

    PERFECTION!! Worth every penny

    Jul 20, 2025
    Bob4969, Greeley, Colorado
    After trying the S&F Elite we settled on the Queen LUX ESTATE medium Tight Top. A best for our mid 70's bodies that need strong support and a smooch easier to get in and out. we love the support this gives us over those mattresses in a box. S &F reminds us of the great mattresses of years ago. Thank you Stearns & Foster


    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.

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    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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