king size mattress foundation

Bestseller No. 1
Zinus Armita 9 Inch Smart Box Spring / Mattress Foundation / Built-to-Last Metal Structure / High Profile / Easy Assembly, King
  • THE LAST BOX SPRING YOU’LL EVER NEED - Unlike a traditional box spring, the Armita 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; slats are spaced 6 - 7 inches apart; twin size supports a maximum weight capacity of 250 lbs, while all other sizes can support up to 500 lbs
  • HIGH PROFILE DESIGN - A 9 inch height is perfect for shorter mattresses or for those who enjoy their bed higher off 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
Bestseller No. 2
Zinus Walter 4 Inch Smart Box Spring / Mattress Foundation / Built-to-Last Wood & Metal Structure / Low Profile / Easy Assembly, King
  • A MATTRESS GAME-CHANGER - The Walter is built with all of the trusted support we put into our ever-so-popular platform beds, and this box spring has the total package - an unwavering steel structure, reliable, closely spaced wood slats and a cleverly developed, well, package
  • DURABLY ENGINEERED - Durable steel and wood slats are used to construct the interior framework of this foundation; slats are spaced 2.5 - 2.9 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
  • Dimensions and Weight: King: 79" X 75.5" X 4", 58.86 lb
  • THOUGHTFULLY PACKAGED - All parts, tools and instructions are packed into one compact box that ships straight to your door
Bestseller No. 3
Zinus Armita 5 Inch Smart Box Spring / Mattress Foundation / Built-to-Last Metal Structure / Low Profile / Easy Assembly, King
  • THE LAST BOX SPRING YOU’LL EVER NEED - Unlike a traditional box spring, the Armita 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; slats are spaced 6 - 7 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 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
SaleBestseller No. 4
Zinus Victor 9 Inch Quick Lock Box Spring / Mattress Foundation / Built-to-Last Metal Structure / High Profile / Easy Assembly, King
  • HASSLE & HEADACHE FREE - The Quick Lock Metal Box Spring comes together with easy-to-follow instructions, fewer bolts and absolutely no headaches; assembly that’s intuitive and packaging that seems to defy the laws of physics
  • DURABLY ENGINEERED - A durable steel frame is 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
  • HIGH PROFILE DESIGN - A 9 inch height is perfect for shorter mattresses or for those who enjoy their bed higher off the floor
  • THOUGHTFULLY PACKAGED - All parts, tools and instructions are packed into one compact box that ships straight to your door; Quick Snap assembly system makes set-up intuitive and stress-free
  • 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
SaleBestseller No. 5
Zinus Shalini Upholstered Platform Bed / Mattress Foundation / Wood Slat Support / No Box Spring Needed / Easy Assembly, King
  • Good looks, confident style - Thousands of positive reviews don’t lie - the Shalini, with its diamond pattern stitching that brightens up any room and easy-as-pie assembly, is highly rated for a reason
  • Durably designed - Interior steel framework and dense foam padding add comfort and longevity; twin size supports a maximum weight capacity of 250 pounds, while all other sizes can support up to 500 pounds
  • 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 2.7 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 conveniently 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
Bestseller No. 6
Zinus Armita 7 Inch Smart Box Spring / Mattress Foundation / Built-to-Last Metal Structure / Easy Assembly, King
  • BOX SPRING ONLY | A bed frame or platform bed is required to support this foundation (sold separately)
  • THE LAST BOX SPRING YOU’LL EVER NEED - Unlike a traditional box spring, the Armita is made of solid steel that comes together in no time and is surrounded by a fine polyester jacquard zip cover
  • DURABLY ENGINEERED - Durable steel is used to construct the inside framework of this foundation | Slats are spaced 6 - 7 inches apart | Twin size supports a maximum weight capacity of 250 pounds, while all other sizes can support up to 500 pounds
  • 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
SaleBestseller No. 7
Zinus Justina Quick Snap Standing Mattress Foundation / Platform Bed / No Box Spring Needed / Grey, King
  • GOOD DESIGN AWARD WINNER - Awarded by the Chicago Athenaeum Museum of Architecture and Design in 2019 for innovative design and assembly
  • EASY ASSEMBLY, ZIP-FREE COVER - features bolt-free Quick Snap assembly for convenient and quick set-up; hooks and elastic loops hold the cover in place; all tools, parts, and instructions included in one smartly shipped box
  • NO BOX SPRING NEEDED - rest your memory foam, latex or spring mattress directly on top of this foundation for excellent support and extended mattress life
  • MULTIPLE COLORS AND SIZES - offered in an array of colors and extended sizes to suit any room size or home interior
  • Worry-free five-year limited warranty included; mattress sold separately
Bestseller No. 8
AmazonBasics Mattress Foundation / Smart Box Spring for King Size Bed, Tool-Free Easy Assembly - 9-Inch, King
  • 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 Assembly: New frame construction allows for easy assembly in minutes with no tools required
  • Foldable steel frame to be packed in one smart package and faster delivery to your front
Bestseller No. 9
Simple Houseware 14-Inch King Size Mattress Foundation Platform Bed Frame, King
  • 14" height for more storage space. 13" storage space under the frame
  • Replace bed frame and box spring
  • No tools are required. Easy assembly
  • No additional box spring is reauired. You can put your memory foam, spring, or latex mattress directly on it.
  • 500 lb. capacity for average weight people
Bestseller No. 10
Zinus Van 16 Inch Metal Platform Bed Frame with Steel Slat Support / Mattress Foundation, King
  • Strong support with steel slats prevents sagging and increases mattress life
  • Eliminates the need for a box spring
  • Assembles easily in minutes / 14 inches of clearance under the frame for valuable under bed storage space
  • Foam padded tape is added to the steel frame for noise free use for Full, Queen and King sizes
  • Available in Twin, Full, Queen and King sizes

Compare The Top 10 king size mattress foundation

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