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GIF of Casper's Foundation being put together from its pieces

Close-up image of the corner of the Foundation

Side view of a made bed. The mattress is on a Foundation on top of a metal bed frame

Casper

Foundation

BEST SELLER

$269.10

SAVE 10%

Comp. Value:

$299

The bedrock of great sleep.

We reinvented the box spring. Our bed foundation provides excellent support under any Casper mattress and can be assembled in minutes.

Need replacement Casper Foundation pins? Shop Foundation Pin

Why you'll love it

STRONG AND STURDY: Engineered with solid wood, the foundation has been rigorously tested for durability and proven to stand up to years of sleep.

EFFORTLESS ASSEMBLY: It can be easily assembled and disassembled in a matter of minutes — and you don’t need to use any tools.

SUPPORTIVE SLATS: Perfectly spaced slats positioned a perfect four inches apart for optimal support.

Select your size:

Twin Twin XL Full Queen King California King

In-stock, ships in 1-2 business days | Free shipping & returns

Got Questions

Chat with us now, or give us a call: +1.888.498.0003

Our friendly Sleep Specialists are dedicated to helping you find the mattress of your dreams!

Foundation

$269.10

SAVE 10%

Comp. Value:

$299

Select your size:

$269.10

Comp. Value:

$299

Product specifications

Measurements & dimensions

Twin

74" x 37.5" x 7.5"

Twin XL

79" x 37.5" x 7.5"

Full

74" x 52.5" x 7.5"

Queen

79" x 59.5" x 7.5"

King

79" x 75.5" x 7.5"

California King

71.5" x 83" x 7.5"

Materials & certifications

Solid and/or Engineered Wood Frame and Slats Woven Exterior Upholstery Non-Woven Interior and Slat Upholstery

Warranty, Shipping, & Returns

Free shipping via UPS – additional shipping fees apply to Alaska and Hawaii. Click here to learn more about our delivery process.

Furniture has a 30-night trial, extended to 100 nights if purchased alongside a matching mattress. Subject to 2 Year Limited Furniture Warranty.

Some states charge a Recycling Fee to help fund their mattress recycling programs. This state-mandated fee is added to the cost of each mattress, foundation, and bed frame you order and is not refundable.

Frequently asked questions

Can I use the foundation on the floor?

We don’t recommend putting the Casper foundation directly on the floor. The chambray upholstering that covers the foundation’s sides is not designed for it. Doing so can cause unsightly wear and we want your Casper bed set to stay in perfect condition — and be eligible for warranty. Mattress foundations are intended as a box spring alternative, and as such are best paired with a sturdy metal frame to ensure maximum durability and longevity.

Do you need a foundation for a mattress?

Much like the foundation of your home, a mattress foundation provides critical support for the entire bed. To keep sagging at bay, you need a strong and leveled base for your new mattress. This is especially true for memory foam mattresses and innerspring mattresses, as they require adequate support to maintain their structure.

At Casper, our mattress foundations are designed to protect all mattresses from degradation, no matter the bed frame or material. For sleepers with no bed foundation or just an old box spring, it’s time for an upgrade to truly complement your mattress purchase.

What is a bed foundation used for?

Unlike old box springs and sagging foundations, a quality mattress base provides a solid surface that ensures lasting support. Your mattress will remain in peak condition for years to come, alongside many sleep-supporting benefits:

Improved sleep and comfort
No mattress sagging
Secured mattress placement
Improved airflow

Alongside Casper mattresses, our bed foundations are designed for long-lasting support and act as the perfect box spring alternative for your mattress. With our compact slatted foundation design, you won’t be bothered by gaps or sharp pressure points.

What is the best foundation for a mattress?

In short, one that protects your mattress and improves your sleep. Mattress bases range from metal slats to solid platforms. At Casper, we believe the best mattress foundation is our wooden slat model. The closely-spaced beams evenly level your mattress, providing structure without sacrificing comfort. This bed base is great for all types of mattresses, including memory foam, innerspring, and hybrid mattresses, and provides greater support compared to a traditional box spring or foundation.

Is a foundation the same as a box spring?

Not quite. Both bed foundations and box springs provide a base support layer for any mattress type. However, box springs add a little extra give and increase breathability, while foundations are for overall support.

A box spring is any wood or metal bed frame containing coiled springs covered by cloth. This once-popular design is now mostly found on older beds.

A foundation is any non-spring bed base, from metal or wooden slats to solid platforms. Slat models, often referred to as slatted foundations, provide more air circulation and flexibility, while solid bases give the firmest support.

Both slats and solid foundations are an ideal box spring alternative for better mattress protection.

Learn more in our guide on Platform Bed vs. Box Spring.

What height should a mattress foundation be?

The ideal height for a foundation is between six and twelve inches. Shorter mattresses might benefit from a taller foundation and taller mattresses from a shorter base. When it’s all evened out with a bed frame and mattress, most beds are about two feet tall, though it’s really a matter of personal preference. Our mattress base measures 7.5” high, making it compatible with most beds.

Is the Casper Metal Bed Frame compatible with headboards?

Yes, but only when paired with our Rise Headboard Bracket attachment. This bracket is only compatible with Casper Attachable Headboards, Rise Adjustable Bases, and the Casper Metal Bed Frame.

Can I get another copy of the assembly instructions?

Absolutely! Click here to download a PDF of the Foundation setup guide.

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Find a Casper store near you

Feel the difference in person. Try products for yourself and chat with a Sleep Specialist at a store near you.

Find a store

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Connect with a Sleep Specialist

Our Sleep Specialists are dedicated to helping you find the mattress of your dreams. Give us a call or chat with us now.

Email us Call +1-888-498-0003

Elevate your sleep game

SAVE 35%

two hybrid snow pillows front with another two in the back. The back two are in pillowcases with a sheet set placed on top of them.

Two Hybrid Snow Pillows leaning back against a headboard.

Cool Sleep Bundle

From:

$201.60

Comp. Value:

$288

BEST SELLER

SAVE 10%

Waterproof Mattress Protector

From:

$98.10

Comp. Value:

$109

SAVE 10%

Breathable Mattress Protector

From:

$116.10

Comp. Value:

$129

BEST SELLER

SAVE 10%

Original Pillow

From:

$67.50

Comp. Value:

$75

What is Comp. Value?

A man unboxes his Casper mattress on his bed frame.

What is Comp. Value?

Our Comparable Value prices reflect the price at which we or third parties have offered this item or a comparable item.

How does Casper create the best value products for their sleepers?

Everything must help sleep and must be tested.

Our team regularly searches the market and tests comparable mattress and sleep products to ensure that ours offer top-quality materials, the most value for your dollar, and the best sleep experience on the market.

Every Casper mattress is designed and assembled in the USA.

As part of the Carpenter Co family, Casper mattresses are manufactured by the largest foam manufacturer in the world—no middle man, no markups, just the best prices for our sleepers.

We don’t rely on gimmicks—just 12+ years of expertise.

With 12+ years in the mattress and bedding industry, the Casper team knows what makes a great night’s rest and what’s just fluff. Our mattresses and bedding are obsessively-engineered and precisely-layered to help you get your deepest sleep ever.

We don’t sleep on getting you the best possible deal.

The Comp. Value shown for Casper products is never set it and forget it. Our team conducts thorough market research every quarter to ensure our comparable value is always accurate to the bedding market and the three most comparable products, so you never have to worry about missing out on savings.

A Casper store associate interacts with a person by a mattress.