---
product_id: 687403800
title: "Heavy Duty Couch Cushion Support Board, 21.5\"x70\", Thick Plywood Adds Strong Seat Support, Stays in Place, Replacement Stuffing for Sagging Sofas, Gray"
brand: "gorilla grip"
price: "1224.23 DT"
currency: TND
in_stock: true
reviews_count: 10
category: "Gorilla Grip"
url: https://www.desertcart.tn/products/687403800-heavy-duty-couch-cushion-support-board-21-5x70-thick-plywood
store_origin: TN
region: Tunisia
---

# Slip-resistant PVC grip dots 0.43" thick premium plywood 21.5" x 70" wide coverage Heavy Duty Couch Cushion Support Board, 21.5"x70", Thick Plywood Adds Strong Seat Support, Stays in Place, Replacement Stuffing for Sagging Sofas, Gray

**Brand:** gorilla grip
**Price:** 1224.23 DT
**Availability:** ✅ In Stock

## Summary

> 🛋️ Reinvent your sofa’s comfort—because sagging seats are so last season!

## Quick Answers

- **What is this?** Heavy Duty Couch Cushion Support Board, 21.5"x70", Thick Plywood Adds Strong Seat Support, Stays in Place, Replacement Stuffing for Sagging Sofas, Gray by gorilla grip
- **How much does it cost?** 1224.23 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/687403800-heavy-duty-couch-cushion-support-board-21-5x70-thick-plywood)

## 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

- • **Effortless Upgrade:** Tool-free, foldable design installs in minutes—no handyman needed
- • **Stay-Put Stability:** Hundreds of grip dots prevent shifting, keeping your sofa firm and reliable
- • **Unmatched Durability:** Premium .43" plywood supports up to 400 lbs for long-lasting sofa strength
- • **Maximized Support Area:** Wide 21.5" x 70" board covers more surface to banish sagging seats
- • **Universal Fit Flexibility:** Foldable and stackable to perfectly fit loveseats and smaller sofas

## Overview

The Gorilla Grip Heavy Duty Couch Cushion Support Board is a robust 21.5" x 70" plywood panel designed to restore and enhance sagging sofas. Crafted from premium .43" thick plywood, it supports up to 400 pounds and features slip-resistant PVC grip dots to stay securely in place. Easy to install without tools, its foldable and stackable design ensures a universal fit for various sofa sizes, delivering durable, long-lasting seat support and comfort.

## Description

Product description ADD STRONG, LONG LASTING SUPPORT TO SOFAS Easily and quickly upgrade your sagging or broken sofa with our ultra strong, high-quality plywood replacement support board. The Gorilla Grip Board adds extra support and comfort to sofas with sagging frames, cushions or worn out springs. Our boards are 21.5” wide to cover more surface area therefore, providing more cushion supports. ULTRA DURABLE .43 INCH THICK PLYWOOD BOARDS Unlike other brands that use MDF or particle board, ours is constructed with high quality .43” thick plywood that is naturally stronger and more durable and stable. Support board can hold up to 400 pounds! STAY-IN-PLACE GRIP DOTS Designed to stay in place on sofas, board features hundreds of slip resistant PVC dots on the underside. Dots help grip to sofa frame and prevent board from shifting during daily use. EASY TO INSTALL Extremely easy to install fix in minutes; simply remove sagging cushions from couch, unfold board and apply to width of sofa frame with grip dots on the underside, then add cushions back to sofa on top of board. FOLDABLE AND STACKABLE FOR UNIVERSAL FIT Boards are available in standard and oversized sofa sizes for a perfect fit but can also be folded and stacked to accommodate loveseats and smaller couches. We recommend measuring your sofa before purchase, measure your sofa seat width from left inside arm to right inside arm. Safety Warning Keep away from high heat or open flames. Supervise children and pets to avoid risk of entrapment. Legal Disclaimer Indoor use only Manufacturer Contact Information Norwalk, CT, 06855, US

Review: I recommend - Well made and professional, it fulfills its purpose perfectly. I definitely recommend it.
Review: Good buy - Really pleased with this item. Just what was needed to make our old sofa more supportive.

## 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 70 inches

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CGBF9441 |
| Accent Color | Gray |
| Age Range Description | Adult |
| Arm Style | Armless |
| Assembly Instructions Description | Already Assembled |
| Assembly required | No |
| Back Style | Backless |
| Best Sellers Rank | 81,554 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 96 in Sofas & Couches |
| Brand | Gorilla Grip |
| Brand Name | Gorilla Grip |
| Colour | Grey |
| Component Connector Assembly | Not Required |
| Cushion Construction | Plywood Board Support |
| Cushion Style | Boxed Edge |
| Customer Reviews | 4.6 out of 5 stars 4,236 Reviews |
| Frame Color | Gray |
| Frame Material Type | Engineered Wood |
| Furniture Leg Material | Engineered Wood |
| Has Removable Seat Cushion Cover | false |
| Included Components | Sofa Support Board |
| Includes All Assembly Tools | No |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required? | No |
| Is Customizable? | No |
| Is Modular | No |
| Item Depth | 21.5 inches |
| Item Dimensions | 54.6 x 177.8 x 1.1 centimetres |
| Item Dimensions D x W x H | 1.1D x 54.6W x 1.1H centimetres |
| Item Firmness Description | Medium |
| Item Shape | Rectangular prism |
| Item Weight | 4.13 kg |
| Manufacturer | Hills Point Industries, LLC |
| Manufacturer Contact Information | Norwalk, CT, 06855, US |
| Manufacturer Grade | Gorilla Grip |
| Manufacturer Part Number | 840316706964 |
| Material Features | Robust and durable |
| Material Type | Engineered Wood |
| Minimum Weight Capacity | 181.4 Kilograms |
| Model Number | 840316706964 |
| Number of Pieces | 1 |
| Pattern | Solid |
| Product Care Instructions | Spot Clean with Damp Cloth, Wipe with Damp Cloth |
| Recommended Uses For Product | Supporting sofas |
| Room Type | Living Room |
| Seat Cushion Configuration | Single Cushion Seat |
| Seat Depth | 54.6 centimetres |
| Seat Fill Material | Foam |
| Seat Height | 0.43 Inches |
| Seat depth | 54.6 centimetres |
| Seat height | 0.43 Inches |
| Seating Capacity | 1 |
| Seating capacity | 1 |
| Set Name | GORILLA Grip Sofa Set |
| Size | 21.5" x 70" Sofa |
| Sleeping Bag Filling Material | Heavy Duty .43" Plywood Boards |
| Sofa Type | Standard |
| Special Features | Easy To Install, Folding, Stackable, Stay in Place Grip Dots, Tool Free Assembly |
| Style Name | Modern |
| Theme | Modern |
| UPC | 840316706964 |
| Upholstery Color | Grey |
| Weight Capacity Maximum | 181.4 Kilograms |
| Weight limit | 181.4 Kilograms |

## Product Details

- **Assembly required:** No
- **Brand:** Gorilla Grip
- **Colour:** Grey
- **Item weight:** 9.1 Pounds
- **Product dimensions:** 1.1D x 54.6W x 1.1H centimetres
- **Seat depth:** 54.6 centimetres
- **Seat height:** 0.43 Inches
- **Seating capacity:** 1
- **Type:** Standard
- **Weight limit:** 181.4 Kilograms

## Images

![Heavy Duty Couch Cushion Support Board, 21.5"x70", Thick Plywood Adds Strong Seat Support, Stays in Place, Replacement Stuffing for Sagging Sofas, Gray - Image 1](https://m.media-amazon.com/images/I/71vlBPmRHCL.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

### ⭐⭐⭐⭐⭐ I recommend
*by D***A on 22 April 2026*

Well made and professional, it fulfills its purpose perfectly. I definitely recommend it.

### ⭐⭐⭐⭐⭐ Good buy
*by M***N on 9 October 2025*

Really pleased with this item. Just what was needed to make our old sofa more supportive.

### ⭐⭐⭐⭐⭐ Does what is required
*by P***R on 30 September 2025*

Good firm support

## Frequently Bought Together

- GORILLA GRIP Heavy Duty Couch Cushion Support Board to Fix Sagging Sofas, 21.5 x 70 Sofa, Thick Plywood Boards Add Strong Seat Supports, Stays 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
- LAVEVE Heavy Duty Couch Cushion Support for Sagging Seat 21.5''x70'', Thicken Solid Wood Sofa Under Cushions Boards, Perfectly Fix and Protect Seat, Extend Life

---

## 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.tn/products/687403800-heavy-duty-couch-cushion-support-board-21-5x70-thick-plywood](https://www.desertcart.tn/products/687403800-heavy-duty-couch-cushion-support-board-21-5x70-thick-plywood)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-18*