---
product_id: 625135213
title: "GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 78 Oversized Sofa, Slip Resistant Thick Boards Add Strong Seat Supports, Replacement Stuffing Firmer Couches, Grey"
brand: "gorilla grip"
price: "S$159"
currency: SGD
in_stock: true
reviews_count: 13
category: "Gorilla Grip"
url: https://www.desertcart.sg/products/625135213-gorilla-grip-heavy-duty-couch-cushion-support-board-to-fix
store_origin: SG
region: Singapore
---

# Slip-resistant PVC grip dots for stability 0.43-inch premium plywood thickness 21.5 x 78 inches oversized support coverage GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 78 Oversized Sofa, Slip Resistant Thick Boards Add Strong Seat Supports, Replacement Stuffing Firmer Couches, Grey

**Brand:** gorilla grip
**Price:** S$159
**Availability:** ✅ In Stock

## Summary

> 🛋️ Upgrade Your Lounge Game — Because Your Back Deserves Better!

## Quick Answers

- **What is this?** GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 78 Oversized Sofa, Slip Resistant Thick Boards Add Strong Seat Supports, Replacement Stuffing Firmer Couches, Grey by gorilla grip
- **How much does it cost?** S$159 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/625135213-gorilla-grip-heavy-duty-couch-cushion-support-board-to-fix)

## Best For

- gorilla grip enthusiasts

## Why This Product

- Trusted gorilla grip brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Heavy-duty .43-inch plywood supports up to 400 lbs without bending or breaking.
- • **Effortless Upgrade:** Tool-free, foldable design makes installation a breeze—just lift cushions, place, and relax.
- • **Stay-Put Stability:** Hundreds of slip-resistant grip dots keep the board perfectly in place—no shifting, no slipping.
- • **Reclaim Your Couch’s Comfort:** Transforms sagging sofas into firm, supportive seating instantly.
- • **Universal Fit, Stackable Flexibility:** Oversized 21.5” width fits most sofas and folds to fit loveseats or smaller couches.

## Overview

The GORILLA GRIP Heavy Duty Couch Cushion Support Board is a premium .43-inch thick plywood insert designed to fix sagging sofas by providing firm, long-lasting support. Measuring 21.5 x 78 inches, it covers a wide surface area and supports up to 400 pounds. Equipped with slip-resistant PVC grip dots, it stays securely in place under cushions, preventing shifting. Easy to install without tools, foldable and stackable for versatile fit, this grey support board rejuvenates your couch’s comfort and extends its life, making it a smart, durable solution for both residential and commercial use.

## Description

desertcart.com: GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 78 Oversized Sofa, Slip Resistant Thick Boards Add Strong Seat Supports, Replacement Stuffing Firmer Couches, Grey : Home & Kitchen

Review: Works perfectly! - Works great!! I was sinking into our couch and it was hurting my back. Put this on and now it's like we got a new couch. Nice and sturdy again! It is thick and sturdy. Very easy to just lift cushions and lay it on the couch and put the cushions back and done!
Review: Works very well! - My sofa is old and saggy, but not no more! I was ready to go buy another couch but I thought I would try this couch cushion support instead! It is like a miracle! It fits perfectly and now my couch is back to being firm! Even my lower back stopped hurting and I can finally get rid of the million little pillows I was using for support. If you are having sofa issues, I suggest you try this product! I am sure you will be glad you did!

## Features

- ADD STRONG, LONG LASTING SUPPORT TO COUCHES AND SOFAS: easily and quickly upgrade your sagging couch or sofa with our ultra-strong, high-quality plywood sofa cushion support board; adds extra support and comfort to couches with sagging frames, cushions, or worn-out springs; our sofa support boards are 21.5” wide to cover more surface area, providing more couch cushion support for sagging couch seats
- ULTRA DURABLE .43 INCH THICK PLYWOOD BOARDS: unlike other couch support options that use MDF or particle board, ours is made with premium .43” thick plywood that is naturally stronger and more durable; this heavy-duty couch board support for sagging seats can hold up to 400 pounds
- STAY IN PLACE GRIP DOTS: designed to stay in place on sofas, this under couch cushion support features hundreds of slip resistant PVC dots on the underside; these grip dots help the couch supporter for under the cushions grip to sofa frame and prevent sofa board from shifting during daily use; individual couch board panels feature rounded corners to reduce chance of cover tearing
- EASY TO INSTALL: installation is simple and fast; simply remove the cushions from your sagging couch, unfold the cushion supports for sagging cushions, and lay them across the width of sofa frame with grip dots on the underside; add cushions back to sofa on top of support board
- FOLDABLE AND STACKABLE FOR UNIVERSAL FIT: boards are available in standard sofa furniture sizes for a perfect fit, but can be folded and stacked to accommodate loveseats and smaller couches; we recommend measuring your sofa before purchase; measure your couch seat width from left inside arm to right inside arm; this support board measures 78 inches

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CGB5FKSC |
| Accent Color | Gray |
| Additional Features | Easy To Install, Folding, Non Slip, Stackable, Tool Free Assembly |
| Age Range Description | Adult |
| Arm Style | Armless |
| Assembly Instructions Description | Already Assembled |
| Assembly Required | No |
| Back Cushion Removability | Removable |
| Back Style | Backless |
| Best Sellers Rank | #3,761 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #2 in Sofa Replacement Parts |
| Brand | GORILLA GRIP |
| Brand Name | GORILLA GRIP |
| Color | Grey |
| Component Connector Assembly | Not Required |
| Cushion Construction | Heavy Duty .43 inch thick plywood boards |
| Customer Reviews | 4.6 out of 5 stars 4,116 Reviews |
| Fill Material | Heavy Duty .43" Plywood Boards |
| Frame Color | Grey |
| Included Components | Rejuvenator Board |
| Indoor Outdoor Usage | Indoor |
| Is Customizable? | No |
| Is Modular | Yes |
| Item Depth | 21.5 inches |
| Item Dimensions | 21.5 x 78 x 0.43 inches |
| Item Firmness Description | supportive |
| Item Weight | 10.3 Pounds |
| Manufacturer | Hills Point Industries, LLC |
| Manufacturer Part Number | 840316706971 |
| Material Features | Slip-resistant |
| Material Type | Engineered Wood |
| Model Number | 840316706971 |
| Number of Pieces | 1 |
| Pattern | Solid |
| Product Care Instructions | Spot Clean with Damp Cloth, Wipe with Damp Cloth |
| Recommended Number of People for Assembly | 1 |
| Recommended Uses For Product | Commercial, Residential |
| Required Assembly | No |
| Room Type | Bedroom, Living Room, Nursery, Study Room, Sunroom |
| Seat Cushion Configuration | Multiple Cushion Seat |
| Seat Cushion Removability | Removable |
| Seat Depth | 21.5 inches |
| Seat Height | 0.43 Inches |
| Seating Capacity | 5.0 |
| Set Name | 21.5 x 78 Oversized Sofa |
| Shape | Rectangular |
| Size | 21.5" x 78" Oversized Sofa |
| Sofa Type | Standard |
| Style Name | Modern |
| UPC | 840316706971 |
| Upholstery Cleaning Code | W |
| Upholstery Color | Grey |
| Weight Capacity Maximum | 400 Pounds |
| Weight Limit | 400 Pounds |

## Product Details

- **Assembly Required:** No
- **Brand:** GORILLA GRIP
- **Color:** Grey
- **Item Weight:** 10.3 Pounds
- **Seat Depth:** 21.5 inches
- **Seat Height:** 0.43 Inches
- **Seating Capacity:** 5
- **Style:** Modern
- **Type:** Standard
- **Weight Limit:** 400 Pounds

## Images

![GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 78 Oversized Sofa, Slip Resistant Thick Boards Add Strong Seat Supports, Replacement Stuffing Firmer Couches, Grey - Image 1](https://m.media-amazon.com/images/I/71Bg+Pq4R7L.jpg)
![GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 78 Oversized Sofa, Slip Resistant Thick Boards Add Strong Seat Supports, Replacement Stuffing Firmer Couches, Grey - Image 2](https://m.media-amazon.com/images/I/61xzB5zUPfL.jpg)
![GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 78 Oversized Sofa, Slip Resistant Thick Boards Add Strong Seat Supports, Replacement Stuffing Firmer Couches, Grey - Image 3](https://m.media-amazon.com/images/I/71YfvPpjT9L.jpg)
![GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 78 Oversized Sofa, Slip Resistant Thick Boards Add Strong Seat Supports, Replacement Stuffing Firmer Couches, Grey - Image 4](https://m.media-amazon.com/images/I/61YN8mSJqBL.jpg)
![GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 78 Oversized Sofa, Slip Resistant Thick Boards Add Strong Seat Supports, Replacement Stuffing Firmer Couches, Grey - Image 5](https://m.media-amazon.com/images/I/612sYFT-LgL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: How does this sofa cushion support board help fix a sagging couch?**
A: The sofa cushion support board is designed to add firm, long-lasting reinforcement under sagging cushions. The .43" thick plywood helps restore shape & comfort to couches with worn-out springs or sinking cushions to extend the life of your furniture.

**Q: What is the couch cushion support made of, and how durable is it?**
A: Unlike other supports made with particle board or MDF, this board is crafted from heavy-duty plywood that’s strong, stable, and built to last. Thick panels support up to 400 lbs without bending or breaking, offering superior strength for daily use.

**Q: How does the sofa cushion support board stay in place once installed?**
A: The couch supports for sagging cushions are designed with hundreds of non-slip PVC grip dots on the underside that help keep it securely in place. These stay-in-place grip dots prevent shifting during everyday use.

**Q: Is the couch cushion support board easy to install and fit different couch sizes?**
A: Yes, simply remove your cushions, unfold the support board, place it grip-side down, and put your cushions back on top. The foldable and stackable design allows you to customize the fit for various furniture types, from loveseats to full-size sofas.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works perfectly!
*by F***0 on June 17, 2026*

Works great!! I was sinking into our couch and it was hurting my back. Put this on and now it's like we got a new couch. Nice and sturdy again! It is thick and sturdy. Very easy to just lift cushions and lay it on the couch and put the cushions back and done!

### ⭐⭐⭐⭐⭐ Works very well!
*by W***N on July 7, 2026*

My sofa is old and saggy, but not no more! I was ready to go buy another couch but I thought I would try this couch cushion support instead! It is like a miracle! It fits perfectly and now my couch is back to being firm! Even my lower back stopped hurting and I can finally get rid of the million little pillows I was using for support. If you are having sofa issues, I suggest you try this product! I am sure you will be glad you did!

### ⭐⭐⭐⭐⭐ Absolutely incredible, I’ve tried all kinds of solutions for sagging cushions. This is perfect!
*by A***R on June 12, 2026*

This is really good to have! I spent a little money on a new couch and when I thought the cushions were sagging, I put this under them. It made the couch a little too firm so having this going forward is a good move. Great value for the money, better than the foam squares and far easier to use. The size is perfect, so measure your couch so you have the right size. It’s definitely thick but it’s also very light and easy to remove and store. I’m very happy with this gorilla grip support. The perfect solution for for cushions that sag for sure.

## Frequently Bought Together

- GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 78 Oversized Sofa, Thick Plywood Boards Add Strong Seat Supports, Stay in Place Replacement Stuffing Under Couches Gray
- FoamJoy Couch Cushion Support for Sagging Seat - 20" x 20" High-Density Curved Foam Sofa Cushion Support Board, Couch Supporter for Under The Cushions, Grey Set of 3

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sg/products/625135213-gorilla-grip-heavy-duty-couch-cushion-support-board-to-fix](https://www.desertcart.sg/products/625135213-gorilla-grip-heavy-duty-couch-cushion-support-board-to-fix)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-07-22*