---
product_id: 624887052
title: "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, Grey"
brand: "gorilla grip"
price: "€ 241.21"
currency: EUR
in_stock: true
reviews_count: 13
category: "Gorilla Grip"
url: https://www.desertcart.com.cy/products/624887052-heavy-duty-couch-cushion-support-board-to-fix-sagging-sofas
store_origin: CY
region: Cyprus
---

# Slip-resistant PVC grip dots for stability 0.43-inch thick premium plywood 21.5 x 70 inches wide for max coverage 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, Grey

**Brand:** gorilla grip
**Price:** € 241.21
**Availability:** ✅ In Stock

## Summary

> 🛋️ Upgrade your sagging sofa game—comfort and support that lasts!

## Quick Answers

- **What is this?** 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, Grey by gorilla grip
- **How much does it cost?** € 241.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/624887052-heavy-duty-couch-cushion-support-board-to-fix-sagging-sofas)

## 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

- • **Stay-Put Grip Dots:** Hundreds of slip-resistant PVC dots keep the board locked in place—no shifting, no slipping.
- • **Max Surface Coverage:** Wide 21.5-inch by 70-inch board ensures full sofa seat support, banishing sag forever.
- • **Effortless Installation:** Tool-free, foldable design lets you upgrade your couch in minutes—no handyman needed.
- • **Universal Fit & Stackable:** Fits most sofas and loveseats; fold or stack to customize support exactly where you need it.
- • **Heavy-Duty Plywood Strength:** Premium .43-inch plywood supports up to 400 lbs, outlasting MDF alternatives.

## Overview

The GORILLA GRIP Heavy Duty Couch Cushion Support Board is a 21.5 x 70-inch, .43-inch thick premium plywood board designed to reinforce sagging sofas. Featuring slip-resistant PVC grip dots, it stays securely in place under cushions, supporting up to 400 pounds. Easy to install and foldable for universal fit, it extends your couch’s life and comfort without costly replacements.

## Description

desertcart.com: 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, Grey : Home & Kitchen

Review: YUP! This, is what we didn't know we needed. - I should have purchased this years ago! So we bought a great couch about 13 years ago. We've been so lucky that it has held up amazingly; however, those pesky cushions have been killing our backs, as it's time for a replacement. The problem, we have a 8 y/o son who thinks the couch is his jungle gym. So, no new couch for us until he understands that a couch is for his bottom. I digress... this works wonderfully. Our couch is gray, and you can't tell that the Gorilla Grip in gray is even there. My mom asked if we bought new cushions. It vacuums off easily and will hopefully give us another two years on our couch. We want to buy a new one for the new house. The fit is perfect, and I didn't realize that our couch is as big as it is. Super easy to place under your cushions and no more aching backs and saggy sofa. Would most definitely purchase again.
Review: great product and value - added support to the old couch which had lost its support/lift. will get us more time and comfort until we can find the perfect replacement set. worked better than foam pads we also tried.

## 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 |
| Additional Features | Easy To Install, Folding, Stackable, Stay in Place Grip Dots, Tool Free Assembly |
| Age Range Description | Adult |
| Arm Style | Armless |
| Back Style | Backless |
| Best Sellers Rank | #2,416 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1 in Sofa Replacement Parts |
| Brand Name | GORILLA GRIP |
| Color | Grey |
| Component Connector Assembly | Not Required |
| Cushion Construction | Solid Plywood Boards with Grip Dots |
| Cushion Style | Boxed Edge |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,169) |
| Fill Material | Heavy Duty .43" Plywood Boards |
| Frame Color | Gray |
| Frame Material Type | Engineered Wood |
| Furniture Leg Material | Engineered Wood |
| Has Removable Seat Cushion Cover | false |
| Included Components | Couch Cushion Support Board |
| Includes All Assembly Tools | No |
| Indoor Outdoor Usage | Indoor |
| Is Customizable? | No |
| Item Depth | 21.5 inches |
| Item Dimensions | 21.5 x 70 x 0.43 inches |
| Item Dimensions D x W x H | 21.5"D x 70"W x 0.43"H |
| Item Firmness Description | supportive |
| Item Weight | 9.1 Pounds |
| Manufacturer | Hills Point Industries, LLC |
| Material Features | Slip-resistant PVC grip dots |
| Material Type | Engineered Wood |
| Number of Pieces | 1 |
| Pattern | Solid |
| Product Care Instructions | Spot Clean with Damp Cloth, Wipe with Damp Cloth |
| Recommended Uses For Product | Supporting sofas |
| Required Assembly | No |
| Room Type | Guest Room, Home Office, Living Room, Study Room, Sunroom |
| Seat Cushion Configuration | Multiple Cushion Seat |
| Seat Cushion Removability | Removable |
| Seat Depth | 21.5 inches |
| Seat Fill Material | Foam |
| Seat Height | 0.43 Inches |
| Seating Capacity | 4 |
| Shape | Rectangular prism |
| Size | 21.5" x 70" Sofa |
| Sofa Type | Standard |
| Style Name | Modern |
| UPC | 840316706964 |
| Upholstery Color | Grey |
| Weight Capacity Maximum | 400 Pounds |

## Product Details

- **Assembly Required:** No
- **Brand:** GORILLA GRIP
- **Color:** Grey
- **Item Weight:** 9.1 Pounds
- **Product Dimensions:** 21.5"D x 70"W x 0.43"H
- **Seat Depth:** 21.5 inches
- **Seat Height:** 0.43 Inches
- **Seating Capacity:** 4
- **Type:** Standard
- **Weight Limit:** 400 Pounds

## Images

![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, Grey - 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

### ⭐⭐⭐⭐⭐ YUP! This, is what we didn't know we needed.
*by M***T on January 3, 2026*

I should have purchased this years ago! So we bought a great couch about 13 years ago. We've been so lucky that it has held up amazingly; however, those pesky cushions have been killing our backs, as it's time for a replacement. The problem, we have a 8 y/o son who thinks the couch is his jungle gym. So, no new couch for us until he understands that a couch is for his bottom. I digress... this works wonderfully. Our couch is gray, and you can't tell that the Gorilla Grip in gray is even there. My mom asked if we bought new cushions. It vacuums off easily and will hopefully give us another two years on our couch. We want to buy a new one for the new house. The fit is perfect, and I didn't realize that our couch is as big as it is. Super easy to place under your cushions and no more aching backs and saggy sofa. Would most definitely purchase again.

### ⭐⭐⭐⭐⭐ great product and value
*by E***N on February 10, 2026*

added support to the old couch which had lost its support/lift. will get us more time and comfort until we can find the perfect replacement set. worked better than foam pads we also tried.

### ⭐⭐⭐⭐⭐ AMAZING! Highly recommend!
*by A***R on January 24, 2026*

THIS THING WORKS EXACTLY AS DESCRIBED!!!! This couch we have had for about 6 years used on facebook marketplace. It was in fine condition but the seat cushions have definitely gotten softer and not as firm. This works perfectly! When I sat down it felt like a new couch after having this under the cushions. The slip resistant is great too! Highly recommend! You won’t regret it and totally worth the money! The measurements are correct and perfect! This one reaches from one arm rest to the other!

## 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

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-04*