Top 10 Foundation Box Spring King – Box Springs

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1. Zinus

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King, ZINUS 9 Inch Metal Smart Box Spring / Mattress Foundation / Strong Metal Frame / Easy Assembly

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Zinus #ad - 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. 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. 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. 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.
BrandZinus #ad
ManufacturerZinus - DROPSHIP #ad
Height9 inches
Length79 inches
Weight44.97 Pounds
Width75.5 inches
Part NumberOLB-ABS-9K
ModelOLB-ABS-9K
WarrantyWorry-free 5 year limited warranty included.

2. Amazon Basics

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9-Inch Mattress Foundation, King Size, Tool-Free Easy Assembly, Amazon Basics Smart Box Spring Bed Base

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Amazon Basics #ad - 2-piece fabric top and bottom covers the frame and zips together for full coverage; cover is removable for spot cleaning. Outer frame folds down for compact, convenient shipping to your front door. Durable steel frame and horizontal slats provide sturdy, reliable support for any same-size mattress. Easy tool-free assembly; interlocking frame components assemble in minutes. King size measures 9 x 79 x 75. 5 inches HxLxW. The look and functionality of a traditional box spring, memory foam, but made from steel to support any spring, or hybrid mattress.
BrandAmazon Basics #ad
ManufacturerAmazon Basics #ad
Height9 Inches
Length79 Inches
Weight42.24 Pounds
Width75.5 Inches
Part NumberAMZ-9KDBS-K2
ModelAMZ-9KDBS-K2

3. Zinus

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ZINUS 7 Inch Metal Smart Box Spring / Mattress Foundation / Strong Metal Frame / Easy Assembly, King

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Zinus #ad - Box spring only, a bed frame or platform bed is required to support this foundation and is sold separately. 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.

Worry-free 5 year limited warranty included. King: 79" x 76" x 7", 43. 98 lb. 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.
BrandZinus #ad
ManufacturerZinus #ad
Height7 Inches
Length79 Inches
Weight47.02 Pounds
Width75.5 Inches
Part NumberOLB-ABS-7K
ModelOLB-ABS-7K
WarrantyWorry-free 5 year limited warranty included.

4. Zinus

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King, ZINUS 5 Inch Metal Smart Box Spring / Mattress Foundation / Strong Metal Frame / Easy Assembly

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Zinus #ad - Core composition: steel Frames, Fabric: Non Woven with Jacquard Boarder. 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.

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. 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. 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.
BrandZinus #ad
ManufacturerZinus #ad
Height5 Inches
Length79 Inches
Weight46.05 Pounds
Width75.5 Inches
Part NumberOLB-ABS-5K
ModelOLB-ABS-5K
WarrantyWorry-free 5 year limited warranty included.

5. Zinus

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King, ZINUS Metal Box Spring with Wood Slats /7.5 Inch Mattress Foundation / Sturdy Steel Structure / Easy Assembly

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Zinus #ad - Box spring only, a bed frame or platform bed is required to support this foundation and is sold separately. A mattress game-changer - any decent mattress needs a good foundation behind it, well, cleverly developed, 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, closely spaced wood slats and a compact, reliable, package.

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. Worry-free 5 year limited warranty included. Product dimensions :78. 94 x 75. 67 x 7. 5 inches. Maximum weight Recommendation : 700 Pounds.
BrandZinus #ad
ManufacturerZinus #ad
Height7.5 Inches
Length79 Inches
Weight58.86 Pounds
Width76 Inches
Part NumberAZ-HBBS-75K
ModelAZ-HBBS-75K
WarrantyWorry-free 5 year limited warranty included.

6. Zinus

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ZINUS Quick Lock Metal Smart Box Spring / 4 Inch Mattress Foundation / Strong Metal Structure / Easy Assembly, King

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Zinus #ad - Low profile design - a 4 inch height is perfect for taller mattresses or for those who enjoy their bed lower to the floor. Hassle & headache free - the quick lock metal smart 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 - now that’s what we call a new-age box spring.

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. 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.

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.
BrandZinus #ad
ManufacturerZinus #ad
Height4 Inches
Length79 Inches
Weight57.58 Pounds
Width75 Inches
Part NumberOLB-QLBS-4K
ModelOLB-QLBS-4K
WarrantyWorry-free 5 year limited warranty included.

7. Signature Design by Ashley

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Black, Signature Design by Ashley 10" Mattress Box Spring with Metal Foundation, King

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Signature Design by Ashley #ad - Unique shippable design: the perfect alternative to the standard box spring, it is ready to assemble in the comfort of your home. For every taste and budget. Two people recommended. Direct from the manufacturer: Ashley Furniture goes the extra mile to package, protect and deliver your purchase in a timely manner.

Assembly required: easy-to-follow instructions, hardware and tools included. The trusted source for stylish furniture, rugs, lighting, accessories and mattresses. Buy with confidence: designed and manufactured by Ashley Furniture Industries. Innovative bed foundation: need support for a king size mattress? Catering to a busy lifestyle, it is the perfect alternative to the standard box spring and it's the last foundation you'll ever need.

It features a removable fabric cover and rounded corners for added safety. It features a removable fabric cover and rounded corners for added safety. All parts, tools and instructions are packed into one compact box that ships straight to your door. Sturdy metal construction: built to last and designed for durability and longevity, this box spring is constructed of sturdy metal instead of wood. Dimensions: 75. 63" w x 78. 75" d x 9.
BrandSignature Design by Ashley #ad
ManufacturerAshley Furniture Industries #ad
Height9.88 Inches
Length75.63 Inches
Weight55 Pounds
Width78.75 Inches
Part NumberM98X42
ModelM98X42

8. Casper

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Casper Sleep Box Spring Foundation for King Mattress

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Casper #ad - Slats are positioned a perfect four inches apart for optimal support. Requires a simple metal bed frame, slatted bed frame, or a platform if you want extra height. Hold weight – 750 lbs.

Foundation dimensions – 75. 5" w x 79" l x 7. 5" h | metal bed frame – 76. 2" w x 76. 7" l x 7. 3" h | weight – 89 lbs. Compatibility-works with any mattress. Engineered with solid wood and rigorously tested for durability and proven to stand up to years of sleep. The foundation should not be put directly on the floor. Slats distance from each other – 4”. 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. Ships in a compact box and can be easily assembled in minutes - without any tools | Designed and assembled in the USA; Non-Woven Interior and Slat Upholstery.
BrandCasper #ad
ManufacturerCasper Sleep #ad
Height7.5 Inches
Length79 Inches
Weight91.74 Pounds
Width75.5 Inches
Part NumberFN00000064
ModelFN00000064
Warranty2-year limited warranty.

9. Zinus

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Queen, ZINUS Upholstered Metal Box Spring with Wood Slats / 4 Inch Mattress Foundation / Easy Assembly / Fabric Paneled Design

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Zinus #ad - Thoughtfully packaged - all parts, tools and instructions are packed into one compact box that ships straight to your door; easily assembles in less than an hour. Durably engineered - thick steel interior framework and 2.

8 inch wood slats are covered in a durable woven grey fabric; supports any latex, memory foam or spring mattress. Worry-free 5 year warranty included; box spring only, a bed frame or platform bed is required to support this foundation and is sold separately. Style & substance - designed to keep up with appearances, this metal framed foundation offers a twist on traditional; featuring thick wooden slats, a steel structure and grey fabric panels for an upholstered look that complements your mattress and bed frame.

Customize the height of the bed - with 3 different profiles available, you can choose to make your bed as high or low as you like; twin size can support upto 350 lbs, and all other sizes can support upto 700 lbs.
BrandZinus #ad
ManufacturerZinus #ad
Height4 Inches
Length79 Inches
Weight45 Pounds
Width59.5 Inches
Part NumberESBS-4Q
ModelESBS-4Q
WarrantyWorry-free 5 year warranty included.

10. Zinus

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ZINUS No Assembly Metal Box Spring / 9 Inch White Mattress Foundation / Sturdy Metal Structure, Split King, Off-white

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Zinus #ad - High profile design - a 9 inch height is perfect for shorter mattresses or for those who enjoy their bed higher off the floor. 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.

Thoughtfully packaged - All parts and instructions are packed into one compact box that ships straight to your door. 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. 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.
BrandZinus #ad
ManufacturerZinus - DROPSHIP #ad
Height9 inches
Length79 inches
Weight56.88 Pounds
Width75.5 inches
Part NumberSM-SC-BIFD-9SK
ModelSM-SC-BIFD-9SK
Warranty5-year warranty.