Bedsnus Bunkie Board King (78"x72"), King Size Bunkie Board, Bed Board for Platform Bed/Box Spring, Light and Thin/Comfortable/Noise Minimizing Bed Board for Support Mattress
Condition: New
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Availability:
In Stock.
Arrives
Sunday, Jun 14
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Features
- SUPPORT SOLUTION: 8mm thick bunkie board provides essential mattress support while maintaining a low profile design.
- UNIVERSAL COMPATIBILITY: Fits standard bed sizes and works perfectly with memory foam, hybrid, or traditional mattresses requiring solid support.
- SPACE-SAVING: Ultra-thin design helps maximize bedroom space while still offering robust mattress support.
- SOLID CONSTRUCTION: Crafted from durable plastic with polyester covering, designed to evenly distribute weight and extend mattress lifespan.
- EASY SETUP: Lightweight yet sturdy construction allows for quick and simple installation under your mattress.
Size: King
Color: Grey
Material: Plastic
Style: Modern
Brand: Bedsnus
Size: King
Item Dimensions L x W x Thickness: 78"L x 0.31"W x 0.31"Th
Number of Pieces: 1
Item Dimensions: 78 x 0.31 x 0.31 inches
Item Depth: 8mm
Color: Grey
Style Name: Modern
Shape: Rectangular
Material Type: Plastic
Brand Name: Bedsnus
Manufacturer: Bedsnus
Model Number: CMB08
Manufacturer Part Number: CMB08
Set Name: King
Included Components: Bunkie Board
Required Assembly: No
Assembly Instructions Description: No assembly required
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Jun 14
Yes, absolutely! You may return this product for a full refund within 30 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.
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Top Amazon Reviews
This bunkie board is the definition of “boring solution, excellent results.” It’s a thin king size board, 78 by 72 inches, meant to create a more solid surface under a mattress on a platform bed or box spring. It adds support where slats sometimes leave gaps, and it can make the mattress feel more even and stable. The “comfortable” part is really about what it helps the mattress do, not about the board being cozy by itself. Installing it is easy, remove the mattress, set the board flat, put the mattress back, then enjoy a bed that feels less like a hammock. The thin profile is a plus because it doesn’t raise bed height much, which keeps sheets fitting normally. It also helps reduce noise by limiting mattress movement against slats, though it can’t silence a frame that’s already loose. Because it’s king size, it’s still a large piece to wrangle, and two people make it much easier. In daily use, it improves support and can help extend mattress life by preventing uneven wear from wide slat spacing. It works especially well for foam and hybrid mattresses that prefer a continuous base. It can also make a bed feel slightly firmer, which is great for some sleepers and a surprise for others. If the bed frame flexes or has broken slats, this board helps, but it’s not a structural miracle worker. Overall, it’s a practical support upgrade that reduces sag, improves stability, and cuts down on noise for many bed setups. It’s lightweight, thin, and easier than dealing with a bulky box spring. The main downsides are king size handling and the fact it depends on a decent frame to really shine. For anyone who wants a firmer feel and fewer squeaks, it’s a solid purchase. :D Good Things 👍 👍 Creates a flatter, more supportive surface under the mattress 👍 Thin design keeps bed height and sheet fit more normal 👍 Helps reduce slat-related squeaks and shifting 👍 Lightweight compared to traditional box springs 👍 Useful for foam and hybrid mattresses needing solid support Bad Things 👎 👎 Large king size piece can be awkward to move alone 👎 Can make mattress feel firmer than before 👎 Won’t fully fix noisy or unstable frames with loose joints 👎 May slide slightly depending on frame design 👎 Needs a reasonably solid base underneath for best results
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Reviewed in the United States on January 14, 2026 by BuckNerds Media Labs
Trash. No noticeable effect using it between a titan lice mattress and a metal frame with 13 slats and a center support system. The sagging between the metal slats is the same as before. These are made of pliable cardboard- not a rigid material. The covers are made of the same cheap recycled “cloth-like” material that they make biodegradable disposable bags of in countries like India and Thailand. It ripped while assembling. If the materials are not rigid or durable enough to hold their own weight during assembly, they are not going to hold up hundreds of pounds of mattresses and human for long. My measurements and other features do not match the images. After looking at the product page, I suspect the seller has used this SKU to sell other similar items that have received mixed reviews.
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Reviewed in the United States on May 16, 2026 by Redwolfsniper
This bunkie board is a good replacement for a box spring if you are looking for a low profile alternative. This set comes in two pieces that velcro together. It arrives folded up in a compact box. Assembly is quick and easy and takes less than a minute to set up on the bed frame. It functions well and offers a much firmer base for your mattress than a traditional box spring. It fit on the frame well and covered the area that should be covered with no issues. It seems to be pretty sturdy and gives a great foundation for the mattress. Overall, I'm happy with it.
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Reviewed in the United States on January 10, 2026 Reviewed in the United States on January 10, 2026 by Mr. Furkins' Human
This bunkie board is lightweight and easy to move, thanks to its design with more seams. While it’s not as durable as a solid board, it’s supportive and perfect for temporary setups or situations where portability is important. However, for a more permanent solution a more solid single board is superior.
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Reviewed in the United States on December 18, 2025 by Jeff's Corner
Very unimpressed I actually sent it back. It literally was a cardboard covered with some kind of felt as soon as I put the mattress on it it was moving. It wasn’t really strong. I do not recommend this at all unless you have a bed that has like a lot of slats
Reviewed in the United States on May 11, 2026 by James Scott
I’m genuinely so happy I got this King Size Bunkie Board. We’ve been using a bed frame without a box spring, and over time, our mattress just started sinking way too much especially since we’re on the heavier side. It got to the point where it was affecting our sleep and my back was paying the price. After adding this bunkie board, the difference was immediate. It gave the mattress the support it was missing and completely changed the feel firmer, more even, and way more comfortable. I honestly didn’t expect such a big improvement from something so light and thin, but it really delivered. It also helped minimize noise and movement, which is a bonus. And considering how much better we’re sleeping now, it definitely saved my back and my wallet no need to replace the mattress just yet! If you’re dealing with a sagging mattress on a platform bed, especially without a box spring, this is 100% worth it.
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Reviewed in the United States on December 22, 2025 by Isabelle
This is a great addition to my king size bed. I have a metal frame bed that does support the use of platform type mattresses, but they seem to move around on the frame a lot. I have a Sleep Number mattress and the rails of the bed were really not close enough together to do it justice. I got this board in order to solve that problem and it works perfectly.
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Reviewed in the United States on December 23, 2025 Reviewed in the United States on December 23, 2025 by Natalya the Spy