---
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: "$176.10"
currency: USD
in_stock: true
reviews_count: 13
category: "Gorilla Grip"
url: https://www.desertcart.us/products/625135213-gorilla-grip-heavy-duty-couch-cushion-support-board-to-fix
store_origin: US
region: United States of America
---

# .43" thick plywood Holds up to 400 lbs 21.5" wide support 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:** $176.10
**Availability:** ✅ In Stock

## Summary

> 🛋️ Revive Your Sofa, Elevate Your Comfort!

## 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?** $176.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/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

- • **Versatile Fit:** Foldable design adapts to any sofa size.
- • **Quick & Easy Setup:** Install in minutes for instant comfort.
- • **Stay Put Technology:** Slip-resistant grip dots keep the board in place.
- • **Transform Your Sofa:** Upgrade sagging sofas with ease!
- • **Unmatched Durability:** Crafted from high-quality plywood for lasting support.

## Overview

The GORILLA GRIP Heavy Duty Couch Cushion Support Board is designed to provide robust support for sagging sofas. Measuring 21.5 x 78 inches, this ultra-durable .43-inch thick plywood board can hold up to 400 pounds. Featuring slip-resistant grip dots for stability, it is easy to install and fits various sofa sizes, making it an essential upgrade for any living space.

## Description

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Review: Steady and true fit - The product works well. Very sturdy and supports adding more time of usefulness to an Italian leather couch set. Very satisfied.
Review: Works great! - Fits my sofa perfectly and renews the firm support. Very affordable fix for a sofa I don’t want to replace but needs a firming up.

## 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, Stackable, Stay in Place Grip Dots, 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 | #3,916 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1 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 3,805 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 |
| 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 |

## 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

### ⭐⭐⭐⭐⭐ Steady and true fit
*by T***W on April 18, 2026*

The product works well. Very sturdy and supports adding more time of usefulness to an Italian leather couch set. Very satisfied.

### ⭐⭐⭐⭐⭐ Works great!
*by T***A on May 16, 2026*

Fits my sofa perfectly and renews the firm support. Very affordable fix for a sofa I don’t want to replace but needs a firming up.

### ⭐⭐⭐⭐⭐ Good product
*by S***E on April 26, 2026*

Very sturdy, fit perfectly,very comfy as I like a very firm seat. Hope it lasts a long time.

## 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

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-23*