Best King Box Spring In July 2025

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Looking for some of the Best King Box Spring? As you may know, there are dozens of similar products out there and some come with vastly different price tags. Let us help you out here – we have handpicked for you the Best King Box Spring.

To help you in your search, we have completed this list of the Best King Box Spring.

Top Rated Best King Box Spring Of 2025

Rank	Product Name	Score
1	Sleep Master Smart Box Spring, King Buy Now	9.7 Buy Now
2	Zinus Armita - 5-inch Smart Metal Frame Box Spring / Mattress Foundation Buy Now	9.5 Buy Now
3	Zinus Deepak Easy Assembly Wood Slat 1.6 Inch Bunkie Board / Bed Slat Buy Now	9.1 Buy Now
4	Best Price Mattress Heavy Duty Steel Low Profile Box Spring/Mattress Foundation/Easy Assembly Buy Now	8.8 Buy Now
5	PrimaSleep 18 Inch Tall Metal Bed Frame/Dura Steel Slat/Anti-Slip Support/No Box Spring Needed Buy Now	8.6 Buy Now
6	Zinus 12 Inch SmartBase Mattress Foundation, Platform Bed Frame, Box Spring Replacement, Quiet Buy Now	8.3 Buy Now
7	Zinus Walter 7.5 Inch Standard Profile Metal Smart Box Spring / Mattress Foundation Buy Now	8.1 Buy Now
8	Zinus Annemarie Solid Wood Bed Support Slats / Fabric-Covered / Bunkie Board, King Buy Now	7.8 Buy Now
9	AmazonBasics Mattress Foundation / Smart Box Spring for King Size Bed, Tool-Free Easy Buy Now	7.5 Buy Now
10	AmazonBasics Foldable, Metal Platform Bed Frame with Tool-Free Assembly, No Box Spring Needed Buy Now	7.2 Buy Now

1. Sleep Master Smart Box Spring, King

• 5 year warranty
• 76"x79"x9"
• All tools included for easy assembly
• Strong and sturdy metal structure
• Convenient and compact packaging

2. Zinus Armita - 5-inch Smart Metal Frame Box Spring / Mattress Foundation

• Worry free with 5-year limited warranty, fabric care instructions: spot clean only
• These mattress foundations are design for memory foam, spring and/or hybrid mattresses.
• Easy assembly required, all necessary tools included
• Item dimensions: 79 w x 75.5 l x 5 h. item weight: 46 lbs. slats are 6.7 apart from each other
• Your purchase includes one mattress foundation: zinus armita - 5-inch smart metal frame box spring, in king size + one metal frame cover

3. Zinus Deepak Easy Assembly Wood Slat 1.6 Inch Bunkie Board / Bed Slat

• Strong and sturdy 1.6 inch profile wood slat mattress support. ideal for use with platform beds, bunk beds and daybeds
• 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
• Worry free 5-year limited warranty
• Offers additional support for spring, hybrid, and memory foam mattresses
• Fast and easy assembly with convenient and compact packaging

4. Best Price Mattress Heavy Duty Steel Low Profile Box Spring/Mattress Foundation/Easy Assembly

• Heavy-duty steel structure provides the look and functionality of a traditional box spring but made from durable steel for longer-lasting stability.
• Product dimension: (l) 79 inches x (w) 38 inches x (h) 7 inches
• Simple assembly with step-by-step instructions and all the needed tools included (5 year manufacturer warranty)
• Fits with standard size twin xl bed frames
• 7 inch height is ideal for higher profile mattresses

5. PrimaSleep 18 Inch Tall Metal Bed Frame/Dura Steel Slat/Anti-Slip Support/No Box Spring Needed

• Under bed storage space 15. 75 inches of clearance.
• Superior strength no box spring needed with the solid steel frame.
• Easy assembly no additional tools required.
• Outer dimensions 82 x 78 x 18 inches inner dimensions 79. 5 x 75. 5 inches
• Anti-slip structure mattress is embedded in steel frame to avoid sliding or wobbling.

6. Zinus 12 Inch SmartBase Mattress Foundation, Platform Bed Frame, Box Spring Replacement, Quiet

• Best fit for average weight people
• Requires the use of smartbase headboard brackets to connect to a headboard
• No tools are required, assembles in minutes.
• 12 inches high with 11 inches of clearance under the frame for valuable under bed storage space
• Replaces bed frame and box spring

7. Zinus Walter 7.5 Inch Standard Profile Metal Smart Box Spring / Mattress Foundation

• Strong and sturdy steel structure with wood slat support
• Easy assembly with all the needed tools included
• Convenient and compact packaging
• Available in twin, twin xl, full, queen, king, cal king
• Worry free 5 year limited warranty / box spring only, bed frame sold separately

8. Zinus Annemarie Solid Wood Bed Support Slats / Fabric-Covered / Bunkie Board, King

• No assembly required- just remove from packaging and put in place/ ideal for platform beds, bunk beds, and daybeds
• 6 slats for twin, 9 slats for full, 10 slats for queen, 12 slats for king
• Worry-free 5-year warranty
• Strong and sturdy support for your memory foam, hybrid, or spring mattress
• Place vertically from head of the bed to foot instead of horizontally for maximum support

9. AmazonBasics Mattress Foundation / Smart Box Spring for King Size Bed, Tool-Free Easy

• Durable steel frame and horizontal slats provide sturdy, reliable support for any same-size mattress
• Foldable steel frame to be packed in one smart package and faster delivery to your front
• 2-piece fabric top and bottom covers zip securely together for full coverage, cover is removable for spot cleaning
• Measures 9 inches deep, backed by an amazonbasics 1-year limited warranty
• Easy assembly: new frame construction allows for easy assembly in minutes with no tools required
• 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

10. AmazonBasics Foldable, Metal Platform Bed Frame with Tool-Free Assembly, No Box Spring Needed

• Made of durable steel with a sleek black finish, designed for sleepers up to 250 pounds
• Accommodates a matching-size mattress, fast, easy setupno tools required
• Full platform bed frame offers a quiet, noise-free, supportive foundation for a mattress, no box spring needed
• Product dimensions: 75 x 54 x 14 inches (lxwxh), weighs 41.4 pounds
• Provides extra under-the-bed storage space with a vertical clearance of about 13 inches