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LAVEVE

LAVEVE Heavy Duty Couch Cushion Support Board for Sagging Sofa, 21.5''x48''

  • Based on 5,849 reviews
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Availability: 15 left in stock
Fulfilled by Amazon
Arrives Sunday, Sep 20
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Size: 48" x 21.5" - Loveseat


Features

  • BIG UPGRADE LAVEVE couch support features an ergonomically designed thickness. Its upgraded multilayer solid wood composite structure is designed to effectively solve sagging couch cushions while maintaining the right balance of firm support and comfortable flexibility. Each board supports up to 400 lbs for reliable, long-lasting support.
  • FIT FOR ALL SOFA TYPES - Offered in 19 compatible sizes, LAVEVE cushion support fits everything from chairs and loveseats to large sectionals and deep sofas. The foldable couch support is easy to adjust and combine for a perfect furniture fit in any living space.
  • ANTI-SLIP OXFORD FABRIC COVER - Wrapped in heavy-duty 600D Oxford fabric with silicone dots for grip. This under couch cushion support stays firmly in place without sliding, keeping your couch cushions and frame stable during daily use.
  • SAFE ROUNDED CORNERS - Every edge and corner is carefully rounded and polished, providing safe, comfortable sofa cushion support for families with kids and pets. Works perfectly as a couch cushion replacement, providing firm sofa cushion support and extending your sofas life.
  • INSTALL IN SECONDS - The easiest way to fix sagging couch cushionsno tools required. Simply remove cushions, place the under couch cushion support on the frame, and put cushions back. Instantly restore firmness and comfort. Backed by LAVEVEs quality warranty for lasting confidence.

Brand: LAVEVE


Seat Depth: 21.5 inches


Seat Height: 0.7 inches


Weight Limit: 400 pounds


Item Weight: 5 pounds


Color: Black


Special Feature: Folding


Upholstery Fabric Type: Nylon


Room Type: Living Room


Shape: Square


Seat Depth: 21.5 inches


Seat Height: 0.7 inches


Item Weight: 5 pounds


Size: 48" x 21.5" - Loveseat


Item Depth: 20.5 inches


Item Dimensions: 45 x 20.5 x 0.4 inches


Brand Name: LAVEVE


Additional Features: Folding


Room Type: Living Room


Number of Pieces: 1


Indoor Outdoor Usage: Indoor


Orientation: modular


Included Components: couch cushion support


Recommended Uses For Product: Sofa


Set Name: 21.5'' x 48''


Number of Items: 1


Item Highlight: Extra Thick Solid Wood Under Couch Insert with Anti-Slip Dots, Repair Sagging Spring Loveseat and Replace Worn Cushions


Number of Packs: 1


Unit Count: 1 Count


Age Range Description: Adult


Item Type Name: Couch Cushion Support for Sagging Sofa


Manufacturer: LAVEVE


Model Number: 20.5‘’x45‘’ sofa support


Manufacturer Part Number: 45 inch sofa support


Color: Black


Shape: Square


Arm Style: Armless


Pattern: Solid


Back Style: Cushion Back


Cushion Style: Knife Edge


Theme: Solid


Upholstery Color: Black


Finish Types: Fabric


Weight Capacity Maximum: 400 pounds


Item Firmness Description: Firm


Seat Cushion Configuration: Multiple Cushion Seat


Minimum Weight Capacity: 400 pounds


Upholstery Fabric Type: Nylon


Frame Material Type: Wood


Material Type: Wood


Has Removable Seat Cushion Cover: false


Product Care Instructions: Minimal cleaning required. Keep dry and avoid direct contact with cleaning agents.


Seat Fill Material: Foam


Furniture Leg Material: Wood


Seat Back Fill Material: Foam


Material Features: Durable and long-lasting


Cushion Construction: Solid wood frame with woven nylon outer layer


Warranty Type: Limited


Component Connector Assembly: Not Required


Assembly Instructions Description: No tools required. Remove cushions, place the support on the frame, and put cushions back.


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Sep 20

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.

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Top Amazon Reviews

    • No more sagging couch
Size: 72" x 24" - Deep Couch
Review Image by Mariana Abou-Rizk
Review Image by Mariana Abou-Rizk
Review Image by Mariana Abou-Rizk
Well worth the money. I forgot how it feels to have a couch that doesn’t sag in the middle. The cushion support is great, even a little stiff. Fits really well and doesn’t show underneath the cushions.
Reviewed in the United States on September 7, 2026 by Mariana Abou-Rizk
    • Instant difference — made my couch feel brand new again!
Review Image by Tyler
Review Image by Tyler
I noticed an immediate difference as soon as I placed these couch cushion support boards under my cushions. My couch feels so much more supported and I’m no longer sinking down into it like before. It also doesn’t feel like it sits so low to the ground anymore, which completely changed the way the couch feels overall. My couch isn’t even three years old yet, and it was really frustrating how much it had already started to sag, especially since it wasn’t cheap. I honestly wish I had bought this sooner. The only small thing is that it does raise the cushions slightly, so you can kind of see the support underneath a little bit depending on how you sit it—but honestly it’s very minor and not noticeable enough to bother me at all. Overall, this was one of the best purchases I’ve made for my home. It completely improved the comfort and structure of my sectional. I’m really happy with it and would definitely recommend it to anyone dealing with a sagging or low-feeling couch. ... show more
Reviewed in the United States on April 15, 2026 by Tyler
    • No more sagging cushions!!
Size: 70" x 21.5" - Couch
I honestly wasn’t expecting such a big difference, but these support boards completely brought my couch back to life. The cushions used to sink in and feel uneven, especially in the middle, and now everything feels firm, supportive, and comfortable again. Installation took just a couple of minutes — literally unfold and place them under the cushions. The boards feel very sturdy and well made, not flimsy like some cheaper options. They stay in place nicely and instantly improved both the comfort and appearance of the couch. It even helped with back support while sitting for longer periods. For the price, this was an amazing upgrade and saved me from replacing an expensive sofa. Highly recommend to anyone dealing with sagging couch cushions! ... show more
Reviewed in the United States on May 26, 2026 by Craig Ryn
    • Worth it to extend the life of an old couch
Size: 70" x 21.5" - Couch
Fit perfectly and improved the support of the couch, it's a bit hard but definitely a stark difference from before
Reviewed in the United States on July 15, 2026 by Sean
    • Makes a great difference instead of buying new foam inserts.
Size: 48" x 21.5" - Loveseat
This was as described, packaged well, and arrived in a timely manner. The boards are very sturdy and nothing like one that I bought previously years ago for my sofa. They are pricey but worth it for the difference they make with better support for your older cushions, It is a better bargain to purchase this board then spending so much more on new foam inserts for your sofa cushions. ... show more
Reviewed in the United States on August 27, 2026 by baba2
    • Excellent purchase
Size: 70" x 21.5" - Couch
This has changed the ability to sit on the couch! Excellent support! You don’t feel them, however, the couch has been transformed into a whole new couch again! We’re going to purchase ones for love seat and arm chair! Great buy! Will be getting for my bed to! I’ve been sleeping on the couch past few nights because of a bad back and sleeping thru the night is unheard up.. well. 2 nights of almost full sleep! My back feels so much better! Yeah! ... show more
Reviewed in the United States on August 25, 2026 by TLS
    • Not quite wide enough for extra deep couches
Size: 72" x 24" - Deep Couch
The widest width you offer isn’t deep enough for our couch, so it’s not quite working up to its full potential. Would be a great product if it could span both front and back of the couch’s frame. We had it propped up on the back part of the frame, but we’ve noticed the couch’s fabric in the front is ripping now. We have now shifted it to fall in-between the front and back frames, but it’s sinking again and putting even more strain on the fabric, so I guess it’s time for a new couch. ... show more
Reviewed in the United States on July 1, 2026 by Kristina H.
    • It does what it says! Still supporting my couch after 2 years.
Size: 70" x 21.5" - Couch
My couch has been passed down in my family for 100 years. It is an old claw-foot hump-backed couch that was reupholstered in the 90's. It was getting a little saggy and less comfortable so I bought this and shoved it under the long cushion. It was an immediate improvement! The couch is much sturdier and more comfortable. I've been using it for at least 2 years and it is still doing what it was designed to do. ... show more
Reviewed in the United States on August 29, 2026 by Belle

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