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Lutown-Teen Bunkie Board King Under Mattress High-Density Polymer Mattress Support Board King Anti-Sag, Breathable, Moisture Resistant, Noise Minimizing

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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, May 1
Order within 9 hours and 56 minutes
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Size: King


Color: Black


Features

  • Stable Support: The 7mm king size bunkie board uses high-density polymer for long-lasting, stable mattress support that prevents sagging.
  • Non-slip Securing Strap: Equipped with black securing straps (sides & center) to firmly anchor the king bunkie board to frame tubes, preventing movement and keeping the mattress stable.
  • Noise Reduction: The bunkie board king size can effectively absorbs slat friction vibrations to eliminate squeaking for a quieter sleep.
  • Moisture Protection: The king size bunkie board under mattress features a non-woven fabric surface to effectively block moisture, keeping the mattress fresh.
  • Compatibility: With dimensions of 80"L x 74"W, this king bed support board easily fits standard single beds measuring 80'L x 76'W with slat spacing less than 4 inches.

Item Weight: ‎20 pounds


Product Dimensions: ‎79.53 x 74.02 x 0.28 inches


Item model number: ‎LTBNK02-5K


Assembled Height: ‎0.7 centimeters


Assembled Width: ‎188 centimeters


Assembled Length: ‎202 centimeters


Weight: ‎20 Pounds


Date First Available: December 4, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

  • Klarna Financing
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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Sturdy and worth the price
Size: King Color: Black
We bought this for extra support when we upgraded to a steel bed frame. It's definitely worth it, it's helped our bed be incredibly sturdy. Will be purchasing again for our spare room bed.
Reviewed in the United States on April 11, 2026 by Amazon Customer

  • Easy to set up and does its job!
Size: California King Color: Black
This bunkie board was exactly what I needed for my bedtime. I do not have a spring board which made tucking my sheets in impossible. The bunkie board provides a solid base to tuck my sheets, finally! My OCD couldn't handle it!
Reviewed in the United States on April 8, 2026 by Melissa Morrell

  • Great Support/Good Value!
Size: King Color: Black
Very stable and good quality. They seem to be doing very well and good support for king mattress.
Reviewed in the United States on April 1, 2026 by jham

  • Great quality Good price
Size: King Color: Black
Just what we needed for our platform bed
Reviewed in the United States on March 16, 2026 by Roberta

  • What a surprise!
Size: King Color: Black
Just got it today. SUPER easy to set up. I was looking forward to sleeping on it at bedtime but while testing it out, I “accidentally” napped on it. Wow! Instant improvement. My bed feels “solid” now.
Reviewed in the United States on April 8, 2026 by Ronn Henderson

  • Solidly built, but better for support than major leveling
Size: Twin Color: Black
I ordered this because we live in an older house on top of a hill, and the whole house has settled/ continues settling at quite a downward slope, so much so that my husband has to sleep in a constant battle against gravity, trying to keep from being forced out of our queen size bed. With my husband sleeping on the side closest to the door, which is also the side on the lower end of the slope, in addition to him already being heavier than I am, this is a losing battle. I ordered the twin size to put under only his side of the mattress, in hopes that it could help. It helps some, but we really probably need about three or four of these Bunkie Boards stacked to make a drastic enough difference, and at the current price, we simply cannot afford that. We will supplement with something else... maybe some sheets of plywood. This item is upholstered, which would be less likely to damage or snag the mattress than plain old plywood, but maybe a sheet around the plywood could work just as well. I can see scenarios in which the thinness of this Bunkie Board could be preferential, such as simply additional support under a sagging mattress that's on a bedframe with a side rail/ side guard for safety: in that case, you'd want this board to be thin. It is heavy and seems very solid. The upholstered fabric layer around the boards does not seem like it's as durable as it may need to be, and seems like it will snag pretty easily. Overall, if thin additional mattress support is what you need, and the price is within your budget, this may be an okay value. ... show more
Reviewed in the United States on February 1, 2026 by Kelsey

  • Perfect!
Size: King Color: Black
Thought I needed a new mattress, only needed extra support for my platform bed.
Reviewed in the United States on March 19, 2026 by Crystal_dawn

  • Not worth the money
Size: Queen Color: Black
Not strong, very noisy, not work buying
Reviewed in the United States on March 14, 2026 by Kathie

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