Best Full Size Box Springs in 2026

A MATTRESS GAME-CHANGER - Any decent mattress needs a good foundation behind it, and this box spring is one of our best; built with all of the trusted support we put into our ever-so-popular platform beds, this game-changing box spring has the total package - an unwavering steel structure, reliable, closely spaced wood slats and a compact, cleverly developed, well, package.Maximum weight recommendation:700 pounds

DURABLY ENGINEERED - Durable steel and wood slats are used to construct the interior framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs

THOUGHTFULLY PACKAGED - All parts, tools and instructions are packed into one compact box that ships straight to your door

A ONE-AND-DONE SOLUTION - Why buy both a bed frame and box spring for your mattress. Our sturdy steel SmartBase lets you enjoy the benefits of both; and fear not - this hardworking frame only requires opposable thumbs to set-up.Item Dimensions : 79"L x 59.5"W x 5"H.Maximum weight recommendation:350 pounds

Durable steel frame and horizontal slats provide sturdy, reliable support for any same-size mattress

2-piece fabric top and bottom covers the frame and zips together for full coverage; cover is removable for spot cleaning

THE LAST BOX SPRING YOU’LL EVER NEED - Unlike a traditional box spring, the Smart box spring is made of solid steel that comes together in no time and is backed by our Zinus “Peace of Mind” 5 year warranty

DURABLY ENGINEERED - Durable steel is used to construct the inside framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs

THOUGHTFULLY PACKAGED - All parts, tools and instructions are packed into one compact box that ships straight to your door

THE LAST BOX SPRING YOU’LL EVER NEED - Unlike a traditional box spring, the Smart box spring is made of solid steel that comes together in no time and is backed by our Zinus “Peace of Mind” 5 year warranty

DURABLY ENGINEERED - Durable steel is used to construct the inside framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs

LOW PROFILE DESIGN - A 5 inch height is perfect for taller mattresses or for those who enjoy their bed lower to the floor

THE LAST BOX SPRING YOU’LL EVER NEED - Unlike a traditional box spring, the Smart box spring is made of solid steel that comes together in no time.

DURABLY ENGINEERED - Durable steel is used to construct the inside framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs. Core Composition: Steel Frames, Fabric: Non Woven with Jacquard Boarder

HIGH PROFILE DESIGN - A 9 inch height is perfect for shorter mattresses or for those who enjoy their bed higher off the floor; For the fastest resolution and to avoid delays, please describe your issue as precisely as possible

AS SIMPLE AS UNFOLD & UNWIND - Requiring no tools and zero tedious assembly, the innovative No Assembly box spring requires only unfolding to become bedtime ready; the hardest part will be taking it out of the box

DURABLY ENGINEERED - Durable steel is used to construct the interior framework of this reliable foundation; twin supports a maximum weight capacity of 350 lbs, while aother sizes can support up to 700 lbs; Queen, King and Cal King sizes are split versions

HIGH PROFILE DESIGN - A 9 inch height is perfect for shorter mattresses or for those who enjoy their bed higher off the floor

ALL-IN-ONE SUPPORT - Made with the same steel structure of our tried and true box springs, the Keenan Mattress Foundation features a dependable mattress platform supported by multiple durable legs for stability you can count on

HEADBOARD COMPATIBLE - Included headboard brackets allow you to attach your favorite standard-sized headboard to the foundation; hardware for attachment is not included

DURABLY ENGINEERED - Durable steel is used to construct the interior framework of this reliable foundation for greater longevity; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs

NATURAL WOOD INTERIOR - Engineered with thicker wood slats than most traditional box springs, this strong and steady solid wood frame is ideally suited to support memory foam or latex mattresses

DURABLY ENGINEERED - Durable wood is used to construct the interior framework of this reliable foundation; slats are spaced 2.8 – 3.4 inches apart; twin size supports a maximum weight capacity of 250 lbs, while all other sizes can support up to 500 lbs

LOW PROFILE DESIGN - A 4 inch height is perfect for taller mattresses or for those who enjoy their bed lower to the floor

MATTRESS ONLY-Sofa not included. This Pull Out Sofa Mattress Bed is carefully designed with gel memory foam, providing unmatched comfort and quality at a reasonable price. The memory foam conforms to the body, aligning the neck and spine, allowing the user to relax and enjoy a good night's sleep. Each mattress ships compressed for easy delivery.

LAYERED DESIGN: With a 2-inch gel plush memory foam layer and a 2.5-inch foam support base, this sofa mattress is vastly more comfortable than traditional sofa mattresses that either are flat mats or have springs. The memory foam layer is specifically designed to breathe, allowing the user to remain cool throughout the night.

VERSATILE: Our comfortable Pull Out Sofa Bed has a variety of possible uses. Add the foldable mattress to your sleeper sofa in your living room, place it on a platform bed frame in your guest room, or even use it in a trailer, camper van, hide-a-bed, futon, boat or RV.

Strong and sturdy steel structure for longer-lasting durability and heavy duty, increases mattress life

9 inch Height Design is perfect for traditional heavy mattresses or memory foam mattress

Noise-free and Non-slip design are added to the fabric zipper coverlet (bed cover) to prevent squeaks and keep mattress in place

EFFORTLESS CARRYING: The boxspring easily navigates tight passageways and entranceways by splitting in two. Fits through tiny stairwells or tight hallways with ease and you can enjoy it out too.

DESIGNED TO ENDURE: Designed using a solid hardwood brackets made of light yet sturdy element, thus preventing the sheet from bending over and breaking, therefore maintaining the size and shape of the mattress. Box Spring lays under the Mattress.AND STURDY: made from strong traditional wood structure, made of light yet dense lumber which prevents the box to loosen up and crack and keeps the mattress in perfect shape

ENHANCED SUPPORT: The frame is crafted from deluxe wood cover that's reinforced for extra durability and strength. It allows the platform to be robust and stable, neither shake nor squeak. It's perfect for those who want a no-replacement, maintenance-free and un foldable bedstead.

Durable Full Box Spring - Strong and sturdy steel structure for longer-lasting durability and heavy duty which provide you a stable and comfortable sleep experience and increases mattress life.

Easy Assembly Boxspring - Minor assembly required with all necessary tools included. Simple installation in minutes.

7 Inch Box Spring Full Size Dimension - 74.5 X 53.5 X 7 inches (LxWxH). 7 inch Height of box spring fit most lower bed frames and mattresses.

Heavy Duty Structure : Box spring full with heavy duty metal slats and durable reinforced steel construction, provide strong support for mattress and increases mattress life. Maximum weight recommendation is 3500 Pounds.

Low Profile Full Box Spring : Design 5 inch height can fit for full size bed frame, memory foam, or hybrid mattress.

Easy Clean Cover : Full size box spring use high quality fabric cover, easy to removable for spot cleaning.

EFFORTLESS CARRYING: The boxspring easily navigates tight passageways and entranceways by splitting in two. Fits through tiny stairwells or tight hallways with ease and you can enjoy it out too.

DESIGNED TO ENDURE: Designed using a solid hardwood brackets made of light yet sturdy element, thus preventing the sheet from bending over and breaking, therefore maintaining the size and shape of the mattress. Box Spring lays under the Mattress.

ENHANCED SUPPORT: The frame is crafted from deluxe wood cover that's reinforced for extra durability and strength. It allows the platform to be robust and stable, neither shake nor squeak. It's perfect for those who want a no-replacement, maintenance-free and un foldable bedstead.

Large Easy to use Dial with Light that comes one when heating

This heater works with Softside waterbeds

This heater will keep your softside mattress nice warm in the winter.

Professional look- Installing a piece of cambric can make the world of difference when it comes to evaluating the quality of a piece of furniture. This is a major reason that new mattress foundations are never retailed without having a piece of dust cloth on the bottom of the bed. When your bed box spring is in need of a replacement cover, our dust cover will help you achieve the professional look you're looking for a fraction of the cost

Multi-purpose fabric - In addition to being commonly found on the underside of boxsprings and mattress foundations, this cambric upholstery fabric can also be used on the back of bed headboards to provide a softer backing and help protect the wall

Optimal Size - Measuring 54" x 80", this black cambric box spring dust cover fabric will fit your full bed foundation perfectly. This can be easily installed with a pair of scissors and a staple gun

🥇 What You Get ---------- In this kit, You will get 250Pcs 5 Sizes Compression Springs Assortment Kit, Each sizes has 50Pcs. Including【0.012×0.16×0.39"】; 【0.012×0.16×0.79" 】; 【0.012×0.16×1.18" 】; 【0.012×0.16×1.57" 】; 【0.012×0.16× 1.97" 】, So many sizes to meet your everyday needs. It has good performance and service life.

🥇 How To Use ---------- By the load acting on them or their ends being compressed, the compression spring is compressed by the wire design trying to return the spring back to its original shape, thus the load is pushed back.

🥇 High Quality Materials ---------- Stainless steel 304 wire Which can not rust in humid environment and have strong oxidation resistance, acid resistance and corrosion resistance. Quality 304 stainless steel which is high hardness and provides excellent rust resistance. The springs are neatly packed in a clean, transparent box for easy storage.

Strong Metal Frame: This mattress foundation features a strong metal frame, which ensures the stability and durability of the mattress.

COMPATIBLE WITH DIFFERENT TYPES OF MATTRESSS: This 9 inch tall mattress foundation is suitable for different types of mattresses, including innerspring mattresses, memory foam mattresses, latex mattresses, etc

Quiet and Noiseless:This mattress foundation adopts a silent design, no matter how you move or turn over, it will not make any noise, allowing you to maintain a comfortable sleeping environment

★【Original Product】All the products have a Anti-fake label on the packing box , you can check if original from COXO website .Many fake and high copy products online , please confirm it before purchase.

★【LED Lighting】LED lighting helps clinicians focus more on the treatment area and make surgery more accurate ， High brightness LED light source with brightness up to 30000 lux

★【Big Torque】A new generation of motors with torque of up to 80N.cm .High performance brushless motor

Sturdy and Durable: This 9-inch full box-spring provides perfect support for your mattress. Its robust steel internal frame prevents any squeaking noise and ensures a peaceful sleep every night.

Quick and Easy Assembly: With an easy-to-assemble integrated structure design, installation is a breeze. All parts and tools included in the package can be used anytime.

Easy to Clean: Enjoy the convenience of maintenance-free cleaning with a high-quality fabric cover that can be easily cleaned on-site.