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LAVEVE Heavy Duty Couch Cushion Support Board for Sagging Sofa, 21.5''x48'' Extra Thick Solid Wood Under Couch Insert with Anti-Slip Dots, Repair Sagging Spring Sofa and Replace Worn Cushions

  • Based on 4,766 reviews
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Sunday, Apr 26
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Size: 48" x 21.5" - Loveseat


Features

  • BIG UPGRADE LAVEVE couch support is upgraded with a multilayer solid wood composite structure, providing firm yet comfortable seating. Each board can withstand up to 400 lbs, ensuring long-lasting durability. The foldable, widened design fits different sofa sizes and offers flexible adjustment. Perfectly solves the problem of sagging couch cushionsmaking your sofa feel as supportive and new as day one.
  • 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


Assembly Required: No


Seat Depth: 20.5 inches


Weight Limit: 400 Pounds


Seating Capacity: 2


Product Dimensions: 20.5"D x 0.4"W x 45"H


Type: Loveseat


Color: Black


Style: Contemporary


Special Feature: Folding


Seat Depth: 20.5 inches


Item Dimensions D x W x H: 20.5"D x 0.4"W x 45"H


Size: 48" x 21.5" - Loveseat


Item Dimensions: 45 x 20.5 x 0.4 inches


Item Depth: 20.5 inches


Brand Name: LAVEVE


Sofa Type: Loveseat


Additional Features: Folding


Room Type: Living Room


Number of Pieces: 1


Indoor Outdoor Usage: Indoor


Orientation: modular


Included Components: /


Recommended Uses For Product: Sofa


Set Name: 21.5'' x 48''


Model Number: 20.5‘’x45‘’ sofa support


Manufacturer Part Number: 45 inch sofa support


Age Range Description: Adult


Manufacturer: LAVEVE


Item Type Name: Couch Cushion Support for Sagging Sofa


Required Assembly: No


Warranty Type: Limited


Component Connector Assembly: Not Required


Includes All Assembly Tools: No


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


Color: Black


Style Name: Contemporary


Shape: Square


Arm Style: Armless


Pattern: Solid


Back Style: Cushion Back


Cushion Style: Knife Edge


Theme: Solid


Upholstery Color: Black


Weight Capacity Maximum: 400 Pounds


Seating Capacity: 2


Item Firmness Description: Firm


Seat Cushion Configuration: Multiple Cushion Seat


Is Customizable?: No


Is Modular: Yes


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


Fill Material: wood


Material Features: Durable and long-lasting


Cushion Construction: Solid wood frame with woven nylon outer layer


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Apr 26

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


  • Glad I found these
Size: 48" x 21.5" - Loveseat
We have a love seat and couch in our sunroom which are of good quality. However, the straps got stretched out from young children jumping on them, and the seats sagged so that they were no longer comfortable to sit in. I saw these and decided to try them. To my delight (and surprise) they not only work well, but were very easy to install. ... show more
Reviewed in the United States on April 3, 2026 by Laurel

  • Instant difference — made my couch feel brand new again!
Size: 70"x23" & 45"x23"- Sectional Couch
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

  • Works well for old couches you still love!
Size: 72" x 24" - Deep Couch
This works great for the couch that puts my husband to sleep within 10 minutes anytime he lays down on it. It fit perfectly, of course I measured first. It adds support and has pretty much ensured that the couch will be around until the end of time. It's worth it if there's a couch you just can't be parted with. My husband is happy, that makes me happy. I didn't give it 5 stars because the cushions do slide off a little, but not a lot, it's not a big deal. ... show more
Reviewed in the United States on December 5, 2025 by alia

  • Strong, well made perfection
Size: 70" x 21.5" - Couch
Perfect solution for our Broyhill sleeper sofa. Broyhill is built to last and not easy to.fi d any more. It's ten years old and like new except for the sagging pillows. We replaced the mattress with a thicker, better model but that didn't resolve the issue. We purchased this product hoping for a better resolution for our problem, and this was perfect. My couch is 65 inches wide from arm to arm, we purchased the 70 inch and it worked out great. It was one slat too wide, so we simply folded it over and the fit was perfect. I highly recommend this product! ... show more
Reviewed in the United States on February 20, 2026 by Outstander

  • This really works!
Size: 70" x 21.5" - Couch
This couch support really works! Used on my 14-year-old Flex-Steel couch. Cushions feel like new. No sinking when sitting down or getting up . Recommended
Reviewed in the United States on April 14, 2026 by Amazon Customer

  • Everyone needs this !
Size: 70" x 21.5" - Couch
I would give this 10 stars if they offered! My couch is in good shape but was sagging because the inner springs were getting old. Love the couch but it had been particularly uncomfortable to sit on due to sagging. This product gave me back my couch which I love and wasn’t willing to part with it. My inner length on my couch was 66 inches x 19.5inches. No assembly required. I just folded over a few planks and it worked perfectly! This is extremely well made with solid wood slats inside the non removable cover. There will be NO sagging due to its construction! Every couch and side chair should have one! No more leaning or sinking in the seat. This has made my bad back very happy! Well worth the price I paid !w ... show more
Reviewed in the United States on February 25, 2026 by Leslie B.

  • Well-made, solid but be sure to read description and measure!
Size: 81"x 30" - Deep Large Couch
Too deep for my sofa (extended beyond the sofa cushions) but it was well-made and solid and I think at the correct depth, would have made my too old sofa more comfortable to sit on and extended its life a bit longer.
Reviewed in the United States on April 16, 2026 by Donna F.

  • Really helped!
Size: 72" x 24" - Deep Couch
Did the trick on my sofa. It was in perfect shape except for the cushions were a bit flat. I placed them underneath and waited for my husband to flop down on it after supper. When he said what did you do the couch? It feels so much firmer? I knew it was a good purchase!
Reviewed in the United States on April 19, 2026 by theresa miller

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