Bunkie Board King Under Mattress High-Density Polymer Mattress Support Board King Anti-Sag, Breathable, Moisture Resistant, Noise Minimizing
Condition: New
Buy Now, Pay Later
As low as
$18.33
/ mo
Learn more
- – 6-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
90-day returns
Learn more
FREE 90-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Thursday, Mar 5
Recently Viewed
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 king beds measuring 80'L x 76'W with slat spacing less than 4 inches.
Size: King
Color: Black
Brand: Lutown-Teen
Item Weight: 20 Pounds
Material: Plastic
Product Dimensions: 80"L x 76"W
Age Range (Description): Adult
Item Thickness: 7 Millimeters
Item Weight: 20 pounds
Manufacturer: Lutown-Teen
Item model number: LTBNK02-5K
Date First Available: December 4, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Mar 5
Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Size: King
Color: Black
The quality of the bunkie board is superb! Super sturdy and functional, was the perfect size for our king size bed frame. It’s very supportive and is a great value for the money we invested! Super easy to assemble too! 10/10
Reviewed in the United States on January 16, 2026 by Sonia the Gemini
Size: Queen
Color: Black
Very comfortable sturdy and sleeps comfortably
Reviewed in the United States on February 7, 2026 by Mrs Nijai Mrs Nijai
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
Size: Queen
Color: Black
Good price and durable but the straps to tie it to the box spring is terrible.
Reviewed in the United States on February 7, 2026 by Kurowsh Saatnia
Size: Queen
Color: Black
Makes a big difference, it gives the support needed. Good investment!
Reviewed in the United States on January 24, 2026 by Blanca
Size: Queen
Color: Black
Not good quality. Doesn't fit properly for queen bed.
Reviewed in the United States on February 8, 2026 by H. Rogers
Size: Queen
Color: Black
Perfect fit for my bed frame, I purchased queen size .
Reviewed in the United States on February 4, 2026 by R. Rios
Size: Twin
Color: Black
Was exactly what i needed
Reviewed in the United States on February 23, 2026 by Sandy Hebert