Top Best Mattress Foundation King Reviews & Comparison [Updated]

We’ve done the hard work for you and compiled a list of the top 10 best mattress foundation king 2023 comparisons based on 67285 customer reviews. So before you go any further, take a look at this list and find the perfect mattress foundation king for your needs.

Mattress Foundation King Best Deals Today

SaleBestseller No. 1
ZINUS 7 Inch Metal Smart Box Spring / Mattress Foundation / Strong Metal Frame / Easy Assembly, King
  • 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.Maximum weight recommendation:700 pounds
  • 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
  • Box spring only, a bed frame or platform bed is required to support this foundation and is sold separately
  • Worry-free 5 year limited warranty included. King: 79" X 76" X 7", 43.98 lb
SaleBestseller No. 2
ZINUS Lorelai 14 Inch Metal Platform Bed Frame / Mattress Foundation with Steel Slat Support / No Box Spring Needed / Easy Assembly, King
  • GO MINIMALIST - Less is more, especially with this modern and structurally sound foundation that lends both strength and understated sophistication to your bedroom - two qualities that never go out of style.Maximum weight recommendation:700 pounds
  • Maximum Weight Recommendation : 700 Pounds
  • UNDERBED CLEARANCE - A 14 inch platform features 13 inches of underbed space perfect for storing extra odds and ends.NO BOX SPRING NEEDED - Reliable metal slats are designed to support and extend the life of your latex, memory foam or spring mattress without the need for a box spring
  • EASY ASSEMBLY - All parts, tools and instructions are shipped straight to your door in one efficiently packed box for simple set-up that takes less than hour with a friend’s help
  • Worry-free 5 year limited warranty included; mattress sold separately; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs
SaleBestseller No. 3
Zinus 14 Inch MyEuro SmartBase / Wooden Slat / Mattress Foundation / Platform Bed Frame / Box Spring Replacement, King
  • STREAMLINED FUNCTIONALITY - With a sturdy frame and mattress platform, functional underbed space and a clean silhouette, this foundation is practical minimalism at its very best
  • WOOD SLATS REPLACE YOUR BOX SPRING - Platform is made with sturdy wood slats and a reinforced steel center support bar that replace your box spring, allowing you to rest your latex, memory foam, or spring mattress directly on top
  • UNDERBED STORAGE - Total of 12.5 inches of clearance space under the frame provides valuable storage room for extra odds and ends, and front and back legs are recessed beneath the frame for safety
  • EASY ASSEMBLY - Shipped in one compact box with all parts, tools and instructions needed for assembly; twin size supports a maximum weight capacity of 750 lbs, while all other sizes can support up to 1500 lbs
  • Worry-free 5 year limited warranty included; mattress sold separately
Bestseller No. 4
Zinus 7.5 Inch Quick Lock Smart Box Spring / Mattress Foundation / Strong Steel Structure / Easy Assembly, King
  • Strong and sturdy structure with less than 3 inch spacing between steel slats
  • Convenient and compact Packaging / Quick Lock Construction for fast and easy assembly
  • Worry free 5 year limited warranty
  • Foam padded tape is added to the steel frame for noise-free use
  • 7.5 inch Height is perfect for most mattresses
Bestseller No. 5
ZINUS 9 Inch Metal Smart Box Spring / Mattress Foundation / Strong Metal Frame / Easy Assembly, King
  • 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
  • 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
  • THOUGHTFULLY PACKAGED - All parts, tools and instructions are packed into one compact box that ships straight to your door
  • Worry-free 5 year limited warranty included; box spring only, a bed frame or platform bed is required to support this foundation and is sold separately
Bestseller No. 6
Zinus OLB-WDBS-4K 4 Inch Low Profile Wood Box Spring/ Mattress Foundation, King, White
  • Strong and Sturdy wood mattress support with perfect 4 in height for higher profile mattresses
  • Available in twin, full, Queen, King for all mattress types
  • Easy assembly in minutes
  • Foam padded tape is added to the steel frame for noise-free use
  • Worry free 5 year limited warranty
Bestseller No. 7
Casper Sleep Box Spring Foundation for King Mattress, Grey
  • The Casper foundation is engineered to provide excellent support under your Casper mattress but can be used with other mattresses in place of a traditional box spring
  • Engineered with solid wood and rigorously tested for durability and proven to stand up to years of sleep. Slats are positioned a perfect four inches apart for optimal support
  • Compatibility-works with any mattress. Requires a simple metal bed frame, slatted bed frame, or a platform (if you want extra height). The foundation should not be put directly on the floor
  • Ships in a compact box and can be easily assembled in minutes - without any tools
  • Designed and assembled in the USA
Bestseller No. 8
ZINUS SmartBase Heavy Duty Mattress Foundation / 14 Inch Metal Platform Bed Frame / No Box Spring Needed / Sturdy Steel Frame / Underbed Storage, King
  • OUR STRONGER MATTRESS SUPPORT – “Strong” may be an understatement; this all-in-one foundation, made with heavy duty steel, can support up to 3000 lbs; all while doing the jobs of both your box spring and frame and giving you back some underbed clearance space too
  • NO BOX SPRING NEEDED - Platform is engineered with heavy gauge steel wires that replace your box spring, allowing you to rest your latex, memory foam or spring mattress directly on top of the foundation
  • UNDERBED STORAGE – Clearance space under the frame provides valuable storage room for extra odds and ends; improved design features recessed legs for safety
  • QUICK, TOOL-FREE ASSEMBLY - Shipped in one box and requires no tools for assembly; simply unfold and rest your mattress on top; twin and twin XL sizes support a maximum weight capacity of 1500 lbs, while all other sizes can support up to 3000 lbs
  • Worry-free 5 year limited warranty included; mattress sold separately
Bestseller No. 9
Zinus 14 Inch Easy To Assemble SmartBase Mattress Foundation / Platform Bed Frame / Box Spring Replacement, King
  • 14 inches high with 12.5 inches of Clearance under the frame for valuable under bed storage space
  • Eliminates the Need for a traditional box Spring and bed frame
  • Compact design allows for tight spaces such as staircases and doorways
  • Multiple points of contact to the floor for level support / Sturdy Steel structure protects your mattress by providing strong level support
  • Requires the use of SmartBase headboard brackets to connect to a headboard
SaleBestseller No. 10
Amazon Basics Mattress Foundation, Smart Box Spring, Tool-Free Easy Assembly - 7-Inch, King
  • General Note: Please allow 24 - 72 hours for your Mattress to regain its full shape. Any memory foam will expand faster in a warmer room. In cold temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion time of the mattress will vary as per the surrounding
  • Offers the look and functionality of a traditional box spring, but made from steel for longer-lasting durability sturdy enough to support any spring, foam, or hybrid mattress
  • Durable steel frame and horizontal slats provide sturdy, reliable support for any same-size mattress
  • 2-piece fabric top and bottom covers zip securely together for full coverage; cover is removable for spot cleaning
  • Easy tool-free assembly; interlocking frame components assemble in minutes
Bestseller No. 11
ZINUS Abel Metal Platform Bed Frame / Mattress Foundation with Steel Slat Support / No Box Spring Needed / Easy Assembly, King
  • GO MINIMALIST - Less is more, especially with this modern and boldly outlined foundation that lends both strength and understated sophistication to your bedroom - two qualities that never go out of style.Maximum weight recommendation:700 pounds
  • NO BOX SPRING NEEDED - Reliable metal slats are designed to support and extend the life of your latex, memory foam or spring mattress without the need for a box spring
  • RECESSED LEGS AND UNDER BED STORAGE SPACE - A 14 inch platform features recessed side legs for even better support with no stubbed toes, and its 12 inches of under bed space is perfect for storing extra odds and ends
  • EASY ASSEMBLY - Metal slats are secured with fewer bolts to save you time and hassle; all parts, tools and instructions are shipped straight to your door in one efficiently packed box; set-up takes less than hour with a friend’s help
  • Worry-free 5 year limited warranty included; mattress sold separately; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs
Bestseller No. 12
Zinus 4 Inch Essential Box Spring,  Mattress Foundation, Easy Assembly Required, King
  • Strong Steel frame structure with wood slat support prevents sagging and increases mattress life
  • Works with any Spring, foam, or Hybrid mattress (not included) and requires a metal bed frame
  • Convenient and compact Packaging allows for easy assembly in minutes with all needed tools included
SaleBestseller No. 13
ZINUS SmartBase Super Heavy Duty Mattress Foundation with 4400lbs Weight Capacity / 14 Inch Metal Platform Bed Frame / No Box Spring Needed / Sturdy Steel Frame / Underbed Storage, King
  • THE ONLY BED FRAME YOU’LL EVER NEED - With the ability to support more than 8 times the weight of a traditional platform bed, the Super Heavy Duty SmartBase is built to stand the test of time and ideal for cosleeping families and plus-sized individuals
  • NO BOX SPRING NEEDED - Platform is made with sturdy steel that replaces your box spring, allowing you to rest your latex, memory foam or spring mattress directly on top
  • UNDERBED STORAGE - Total of 12.8 inches of clearance space under the frame provides valuable storage room for extra odds and ends
  • QUICK, TOOL-FREE ASSEMBLY - Shipped in one compact box and requires no tools for assembly; twin and twin XL sizes support a maximum weight capacity of 2200 lbs, while all other sizes can support up to 4400 lbs
  • Worry-free 5 year limited warranty included; mattress sold separately
SaleBestseller No. 14
Zinus Modern Studio 14 Inch Platforma Bed Frame / Mattress Foundation with Wood Slat Support, King
  • 14 inch Low Profile Foundation supports Memory Foam, Spring, and Hybrid mattresses
  • Use with or without a box Spring to personalize your mattress height, mattress sold seperately
  • Strong Steel frame structure with wood slats prevents sagging and increases mattress life
  • Foam padded tape is added to the steel frame for noise-free use and non-slip tape on the wooden slats prevents your mattress from moving
  • Assembles easily in minutes / Worry free 5 year warranty
SaleBestseller No. 15
Zinus Geraldine 12 inch Black Metal Platform Bed Frame with Headboard and Footboard / Premium Steel Slat Support / Mattress Foundation, King
  • Strong Steel slat support will increase mattress life while eliminating the Need for a box Spring
  • Assembles easily in minutes with no tools required
  • 11 inches of Clearance under the frame for valuable under bed storage space
  • Functional headboard and footboard keep your mattress in place
  • 5 year worry free limited warranty
SaleBestseller No. 17
ZINUS Omkaram Upholstered Platform Bed Frame / Mattress Foundation / Wood Slat Support / No Box Spring Needed / Easy Assembly, King
  • TALL, TIMELESS & TRUSTED - Support your higher profile mattress with this platform bed’s 47-inch tall headboard, designed with a versatile navy shade and button-tufting as well as dependable, box spring-free mattress support
  • Product Dimensions :80.0 x 76.0 x 13.0 inches
  • DURABLY DESIGNED - Interior steel framework and dense foam padding add comfort and longevity; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs.NO BOX SPRING NEEDED - Durable wood slats support and extend the life of your latex, memory foam or spring mattress without the need for a box spring; for the twin and full sizes, slats are spaced 2.8 inches apart, and for other sizes, slats are spaced 3.2 inches apart
  • EASY ASSEMBLY – Everything you need is efficiently packed into one box and shipped straight to your door; all parts, tools and instructions are located in the zippered compartment of the headboard for easy, two-person assembly in under an hour
  • Worry-free 5 year limited warranty included; mattress sold separately
SaleBestseller No. 18
Queen Bed Frame - Mattress Foundation Upholstered Headboard,Strong Wooden Slats,Full Mattress,Platform Bed Frame Queen,King Bed Frame with Storage,Easy Assembly
  • Sturdy And Durable Metal Bed Frame: Queen Bed Frame have strong mattress support with 11 metal slats prevents sagging and increases mattress life. The new upgraded version of the design, increase the bottom middle bar support, make the bed frame platform more superior, strong, durable, stable.
  • Enough Under Bed Storage Space: Bed frame queen size is 60.2"W x 83.54"L x 43.5"(Headboard Height), 12" height off the floor offering sufficient space for under bed storage bins,bags and drawers.
  • Elegant And Retro Shape, Let The Bedroom Have A Special Flavor: We paid great attention to its appearance and quality during production, and finally selected it after multiple screenings.
  • Easy to Assemble: The assembly instructions are very clear and easy to understand, and each part has a clear label. Everything is included in the package and no additional tools are required. Please follow the instructions for assembly.
  • Worry-free After-sales Service: We provides 24 months' warranty and free replacement parts. If you have any problems with your double bed frame, please feel free to contact us. We will solve your problem within 24 hours.
SaleBestseller No. 19
Zinus 7.5 Inch High Profile BiFold Box Spring / Folding Mattress Foundation / Strong Steel structure / No assembly required, Split King
  • Folding mattress foundation compresses for easy mobility and storage
  • Designed to have the look of a traditional box, but made from sturdy steel for longer-lasting durability
  • No assembly required, simply open the box, slide the foundation out and unfold, it will immediately open to the shape of a box spring
  • 7.5 inch height
  • Worry free 5-year limited warranty
Bestseller No. 20
ZINUS 5 Inch Metal Smart Box Spring / Mattress Foundation / Strong Metal Frame / Easy Assembly, King
  • 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
  • THOUGHTFULLY PACKAGED - All parts, tools and instructions are packed into one compact box that ships straight to your door
  • Worry-free 5 year limited warranty included; box spring only, a bed frame or platform bed is required to support this foundation and is sold separately. Fast, easy assembly with no tools

With the overwhelming abundance of mattress foundation king available, it can be a challenge to make an informed purchase. We want to provide you with reviews that are beneficial in your search for mattress foundation king perfect! If we could help simplify things along the way, then don’t hesitate – spread the word and give us motivation as we continue our mission of uncovering great products on your behalf.

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