Maenizi

King Box Spring 9 Inch Heavy Duty Metal Box Spring Bed Base with Fabric Cover Mattress Foundation Easy

$104.49$109.99

1626+ bought in the past month

About this item

  • Stable and Sturdiness: Box spring king with solid steel sturdy struction is strong enough to hold up to 3,000 lb.
  • Easy Assembly: The clear instruction will assist you assemble box spring king size quickly and easily.
  • Noise Free: King bed box spring keep away from noise, take care of your sweet night's sleep.
  • High quality fabric cover: Box springs for king size bed covered by fabric compatible with diffrenent memory foam or hybrid mattress.
  • King box spring only dimenssion:79.6"L x 75.6"W x 9"H.
$104.49
Was $109.99Save $5.50

In Stock

Easy Returns · Return eligibility shown before checkout


How you'll get this item

DeliveryShipping details confirmed at checkout

Fulfillment

Ships fromVentari
Sold by
MAENIZI
Returns
Easy ReturnsReturn eligibility shown before checkout
PaymentsPayment details confirmed at checkout

Currently unavailable
Easy Returns · 30-day window
Product details
SizeKing
MaterialMetal
Product Dimensions79.6"L x 75.6"W x 9"H
StyleModern
Special FeatureSqueak Resistant
Technical specifications
sizeKing
product_dimensions79.6"L x 75.6"W x 9"H
special_featureSqueak Resistant
color9 Inches
finish_typePowder Coated
included_componentsbox spring, cover
compatible_with_mattress_sizeKing
brandMaenizi
assembly_requiredYes
manufacturerMaenizi
form_factorRectangular with four legs
target_audienceAdults, Couples
item_weight40.4 pounds
departmentUnisex Adult
item_model_numberBS9-King
best_sellers_rank#14,644 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #12 in Box Springs
date_first_availableDecember 3, 2023

From the brand

Product detailProduct detailProduct detailProduct detail
Product detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detail

Product videos

Product video 1

Customer reviews

4.41,419 ratings
  1. 575%
  2. 413%
  3. 313%
  4. 20%
  5. 10%

Customers say

Customers find the box spring easy to assemble and appreciate its solid construction that supports mattresses well.

★★★★★

Very happy withy purchase!

Gary G.February 23, 2026✓ Verified purchase

This fit my bed frame perfectly. Easy to assemble (instructions included, but didn't need). A power drill set to the right torque cut assembly time in half. I built the main outer assembly first, then placed the main assembly onto my bed frame -this made positioning easier and lighter for a one-man job. Afterwards, I set in all the structural ribs to completion and slid the mattress on top. Easy-peasy! Read more

Review image 1
★★★★★

Very nice fit on my old frame. Had to lower my bed.

MishaAugust 11, 2025✓ Verified purchase

Very nice. My husband had a stroke so we had to take out my 9 inch box spring and replace it with this one. Pretty easy to put together and very sturdy. So far so good. It is very heavy duty but fit imperfectly over my frame. You could get a bunkie board depending on how soft your mattress is. Happy with my purchase. Read more

★★★★★

Sturdy, Quiet, and Simple to Assemble

KitKatSeptember 7, 2025✓ Verified purchase

I was looking for a box spring that wouldn’t squeak or sag, and this one fits the bill. The metal frame feels solid and supports my full-size mattress well, with no creaking even when I move around at night. The assembly took about 30 minutes with clear instructions and all parts included. The included fabric cover gives a clean look and stretches tightly over the frame. My only minor complaint is that the cover uses Velcro tabs that could be a little stronger, but otherwise, this box spring exceeded my expectations for both sturdiness and ease of setup. Read more

★★★★☆

Works great!

my selfDecember 10, 2024✓ Verified purchase

This took me about an hour to assemble by my self. I cleaned all the parts and made sure all the pieces would fit and screw in properly before starting so assembly its self took more like 45 minutes to complete. I got the twin size and it fit my twin bed frame perfectly. None of the parts squeak or creak. It's solid and Generally well made. The cloth cover fit over it all just fine. there was one issue, though. Since the metal frame was sitting in metal, it could slide back and forth on the metal frame with a a bit of a nudge which is not idea. EASY FIX: I knew this would happen so had some rubbery self liner near by.. I cut some long pieces and places them under the frame in some key areas and bang! it does not slide at all even with a strong shove or pull. Problem solved. It's a little bit taller than a typical wooden box frame so my bed sits a few inches taller but its not that big of a deal. My mattress needs replacing for sure but with this new very solid box frame, it is way more comfortable and supportive that it was on my old wooden, creaky box frame. and IF the new box frame does get squeaky I can use WD40 to fix it right up. And it's waaaay easier if I had to move. Just take it apart and shabam! it's a go with some ties and a bag for the parts. This kind of metal frame is definitely an improvement over a wooden box frame any day. 4 and not 5 stares because it was a beast to carry from the post office. yes, I carried this bad boy quite a ways and it was super gnarly to do so since the center of gravity of box was wonky and it was pretty heavy. Definitional a two person box to carry for sure. Read more

★★★★★

Easy assembly

AdamFebruary 22, 2026✓ Verified purchase

Easy Assembly. My bed is so much quieter with this replacing decades old wood split box spring Read more

★★★★★

Good box spring

Michael GlasMarch 1, 2026✓ Verified purchase

Easy to set up - took two people to get it on the bed. Read more

★★★★★

Best box spring

CustomerJanuary 27, 2026✓ Verified purchase

Love these for my kids; It’s strong and better than the wood box frame ,that my son broke with easily by jumping on his bed. This one doesn’t budge when the kids jump on . Read more

★★★☆☆

Assembly is a bear relative to competition

Josh RJuly 6, 2025✓ Verified purchase

I bought this because it was $20 cheaper than the Amazon Basics box spring for the 9" Queen-sized version. We already got the Amazon Basics version of the 7" King-sized version, and they looked identical, with identical reviews, so I figured I'd save $20. While they both work equally well once assembled (quiet, solid, good fit, same basic appearance, lightweight), the ease of assembly for the Amazon Basics was *much* better. This one was *much* harder to put together, the assembly is more complicated and making the pieces attach was more difficult. Then, when you're almost done, and putting on the crossbars on top, while on the Amazon Basics the bars actually stuck in place when placed, so the final product works like a single solid object, the bars on this one lie loose; if the box spring is tipped, they all fall out, and even light jostling as you move it into place will cause one or two to pop out. If you value your time, or believe you may need to move the box spring even once, go for the Amazon Basics version, not this one. Read more

Recently Viewed

We use optional analytics cookies to understand how visitors use Ventari and improve the experience. This banner controls analytics measurement only. See our Cookie Policy.