---
product_id: 47033689
title: "RaceCityFoam High Density Upholstery Foam (Ultra Firm) 50 ILD - 4\"x24\"x80\""
brand: "racecityfoam"
price: "$651.76"
currency: USD
in_stock: true
reviews_count: 8
category: "Race City Foam"
url: https://www.desertcart.us/products/47033689-racecityfoam-high-density-upholstery-foam-ultra-firm-50-ild-4x24x80
store_origin: US
region: United States of America
---

# 4x24x80 inch customizable size CertiPUR-US eco-friendly certified 50 ILD ultra firm support RaceCityFoam High Density Upholstery Foam (Ultra Firm) 50 ILD - 4"x24"x80"

**Brand:** racecityfoam
**Price:** $651.76
**Availability:** ✅ In Stock

## Summary

> 🛠️ Transform your space with ultra-firm, eco-friendly foam that fits your lifestyle!

## Quick Answers

- **What is this?** RaceCityFoam High Density Upholstery Foam (Ultra Firm) 50 ILD - 4"x24"x80" by racecityfoam
- **How much does it cost?** $651.76 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/47033689-racecityfoam-high-density-upholstery-foam-ultra-firm-50-ild-4x24x80)

## Best For

- racecityfoam enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Conscious Comfort:** CertiPUR-US certified foam ensures no harmful chemicals, promoting healthier indoor air quality.
- • **Tailored to Your Space:** Generous 4" thickness and 24x80" dimensions make custom cuts and layering effortless.
- • **Versatile DIY Essential:** Perfect for everything from vintage furniture restoration to bespoke patio cushions and more.
- • **Effortless Customization:** Easily sliced, glued, and layered to create the exact cushion thickness and shape you envision.
- • **Unmatched Ultra Firmness:** 50 ILD rating delivers resilient, long-lasting support that revives any cushion.

## Overview

RaceCityFoam High Density Upholstery Foam offers a premium 50 ILD ultra-firm polyurethane foam in a versatile 4"x24"x80" size. CertiPUR-US certified for safety and sustainability, this foam is designed for durability and easy customization, ideal for refurbishing cushions, creating custom seating, and enhancing comfort in both indoor and outdoor settings.

## Description

Buy RaceCityFoam High Density Upholstery Foam (Ultra Firm) 50 ILD - 4"x24"x80" | High Density Foam, 50 ILD, Ultra Firm, CertiPUR-US Certified, Made in USA, 4 Inch Thickness, 24 Inch Width, 80 Inch Length: Cushion & Upholstery Foam - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Couch is like new again! - Nice and firm cushion replacement. Need to open it and let it sit for 3-4 days before using. Cuts easy, I just used a razor knife with new blade.
Review: We are happy couch potatoes! - Great quality - I ordered this foam piece as a replacement for cushions that my dog chewed up as a puppy. Now, that same puppy is a 3 year old beagle, and it quickly became his favorite napping spot! The foam is super firm - ideal for extending the value of my investment. Because I am lazy, making a sofa “bench,” the project was easier, added stability and functionality (and few opportunities for chewing). Though I would have preferred double thickness, I simply ordered another foam piece and it gave me the thickness I desired. My dog and I are happy couch potatoes!

## Features

- HIGH DENSITY UPHOLSTERY FOAM - 1.8 High Density - 50 lb. compression rate - Firm and resilient construction for lasting durability. Revitalize your worn-out cushion foam, couch cushions, chair seat cushions, patio chair seat cushions, and other items with high density foam from RaceCityFoam, specially formulated to provide a balanced combination of firmness and cushioning.
- CertiPUR-US Certified Foam - RaceCityFoam only uses high quality materials made without ozone depleting substances. No phthalates, mercury, lead, or other heavy metals; and low Volatile Organic Compound emissions for indoor air quality
- Use For a Variety of Projects - Customized to repair worn down cushion foam, create custom cushions for patio chairs seat cushions and bench seat cushions, bar stools, upholstered headboards, rv seats, boat seats, car seats, golf cart seats, cot mattress pad, window seat cushions, restore vintage furniture, foam mattress toppers and carrying cases for delicate glass or ceramic items, packing foam for delicate glass or ceramic items, accent pillow foam inserts and many other diy projects
- Easy to Customize - RaceCityFoam foam is shipped the same size as selected. Foam is easy to slice through with tools such as a sharp knife, electric knife or electric hot wire foam cutter. Trim the edges, or stack layers for extra thickness to customize the foam perfectly for your needs. Foam can be glued together to create wider pieces or layered upon one another to create thicker cushions. Foam comes in a 24 x 80 inch rectangle but can be cut and customized to whatever size you need
- Foam Care Instructions - Open Immediately! Do Not Cut Foam Until Product Care Instruction Been Completely Followed! Do not use a boxcutter to open the shipping box, Remove Foam from the shipping box, Unroll to relax. Allow 3 to 4 days for the Foam to Expand to its Original Size and Firmness 4x24x80 from being rolled into a bundle and compressed for shipping

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075KPSHSM |
| Best Sellers Rank | #54,018 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #118 in Cushion & Upholstery Foam |
| Brand | RaceCityFoam |
| Brand Name | RaceCityFoam |
| Color | White |
| Cover Material | Foam |
| Customer Reviews | 4.4 out of 5 stars 456 Reviews |
| Fabric Type | Polyurethane Foam |
| Fill Material | Polyurethane Foam |
| Indoor Outdoor Usage | Indoor, Outdoor |
| Item Dimensions L x W | 80"L x 24"W |
| Item Firmness Description | Ultra Firm |
| Item Thickness | 4 inches |
| Manufacturer | Ritchie Foam & Mattress |
| Manufacturer Part Number | RFD3642480 |
| Model Name | Upholstery Foam |
| Model Number | RFD3642480 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Other Special Features of the Product | Portable |
| Pattern | Plain |
| Pillow Type | Furniture Cushion |
| Pillowcase Length | 80 inches |
| Product Care Instructions | Spot clean with a damp cloth and mild soap |
| Recommended Uses For Product | DIY Projects, Furniture Reupholstering, Custom Cushions, Vintage Furniture Restoration |
| Shape | Rectangular |
| Size | 4"T x 24"W x 80"L |
| Style Name | Modern |
| Theme | vintage |
| UPC | 080119088151 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** RaceCityFoam
- **Fill Material:** Polyurethane Foam
- **Pillow Type:** Furniture Cushion
- **Shape:** Rectangular
- **Size:** 4" H x 24" W x 80" L

## Images

![RaceCityFoam High Density Upholstery Foam (Ultra Firm) 50 ILD - 4"x24"x80" - Image 1](https://m.media-amazon.com/images/I/71LXbEmp+eL.jpg)
![RaceCityFoam High Density Upholstery Foam (Ultra Firm) 50 ILD - 4"x24"x80" - Image 2](https://m.media-amazon.com/images/I/718giC67T9L.jpg)
![RaceCityFoam High Density Upholstery Foam (Ultra Firm) 50 ILD - 4"x24"x80" - Image 3](https://m.media-amazon.com/images/I/811v6Bm1CWL.jpg)
![RaceCityFoam High Density Upholstery Foam (Ultra Firm) 50 ILD - 4"x24"x80" - Image 4](https://m.media-amazon.com/images/I/818wz3osM1L.jpg)
![RaceCityFoam High Density Upholstery Foam (Ultra Firm) 50 ILD - 4"x24"x80" - Image 5](https://m.media-amazon.com/images/I/81DDKq17nOL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Couch is like new again!
*by M***B on January 28, 2026*

Nice and firm cushion replacement. Need to open it and let it sit for 3-4 days before using. Cuts easy, I just used a razor knife with new blade.

### ⭐⭐⭐⭐⭐ We are happy couch potatoes!
*by F***S on June 18, 2025*

Great quality - I ordered this foam piece as a replacement for cushions that my dog chewed up as a puppy. Now, that same puppy is a 3 year old beagle, and it quickly became his favorite napping spot! The foam is super firm - ideal for extending the value of my investment. Because I am lazy, making a sofa “bench,” the project was easier, added stability and functionality (and few opportunities for chewing). Though I would have preferred double thickness, I simply ordered another foam piece and it gave me the thickness I desired. My dog and I are happy couch potatoes!

### ⭐⭐⭐⭐⭐ I finally have a comfortable couch!
*by D***E on November 19, 2025*

When we bought our sectional couch we liked the look and didn't spend much time sitting in it. After using it for a while we hated the overly soft cushions and felt like we were sinking in them. We started shopping for a replacement because it was too poofy. Luckily, the cushions have zippers so we were able to remove the foam and Dacron liner. The Dacron came off easily and we replaced the foam with this solid version. It was easy to cut with a bread knife, we used spray glue to put the Dacron liner around the foam and now our couch is solid and comfortable. We have recommended this foam to our friends who also replaced their poofy cushions.

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**Shop now:** [https://www.desertcart.us/products/47033689-racecityfoam-high-density-upholstery-foam-ultra-firm-50-ild-4x24x80](https://www.desertcart.us/products/47033689-racecityfoam-high-density-upholstery-foam-ultra-firm-50-ild-4x24x80)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-18*