---
product_id: 620151883
title: "Sound Deadening Mat 1/4inch(7 mm) 6.54sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening"
brand: "aggsound"
price: "¥7855"
currency: JPY
in_stock: true
reviews_count: 10
url: https://www.desertcart.jp/products/620151883-sound-deadening-mat-1-4inch-7-mm-6-54sqft-closed
store_origin: JP
region: Japan
---

# Reduces 98% heat transfer 1/4 inch (7mm) high-density closed cell foam Self-adhesive with strong, easy-peel backing Sound Deadening Mat 1/4inch(7 mm) 6.54sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening

**Brand:** aggsound
**Price:** ¥7855
**Availability:** ✅ In Stock

## Summary

> 🔇 Drive in silence, shield in style.

## Quick Answers

- **What is this?** Sound Deadening Mat 1/4inch(7 mm) 6.54sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening by aggsound
- **How much does it cost?** ¥7855 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/620151883-sound-deadening-mat-1-4inch-7-mm-6-54sqft-closed)

## Best For

- aggsound enthusiasts

## Why This Product

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

## Key Features

- • **Premium 7mm Thickness:** Optimal density for superior sound and heat insulation without compromising fit
- • **Versatile Application:** Perfect for car doors, hoods, trunks, floors, and even furniture or crafts
- • **Effortless Installation:** Peel-and-stick design with simple 5-step process—no professional help needed
- • **Triple-Layer Construction:** Durable closed cell foam, high-quality adhesive, and tear-resistant backing for long-lasting performance
- • **Heat Shield & Noise Blocker:** Cut down 98% of heat transfer and create a whisper-quiet driving experience

## Overview

AggSound’s 1/4 inch (7mm) closed cell foam sound deadening mat offers 6.54 sqft of premium self-adhesive insulation designed to drastically reduce noise and heat transfer in vehicles. Featuring a durable triple-layer build and easy peel-and-stick installation, it fits seamlessly on doors, hoods, trunks, and more—perfect for professionals seeking a quieter, cooler ride with minimal effort.

## Description

Full description not available

## Features

- [1/4 Inch High Quality Closed Cell Foam, Provide Better Sound & Heat Insulation] Our automotive sound deadener is composed of three layers of high quality material, including 1/4 inch high density closed cell foam, high quality back glue and back paper. It provides better noise insulation effect for your car so you can enjoy a more quiet and comfortable environment. At the same time, it effectively reduces 98% heat transfer. Product include: 16*60inch mat*1roll, total coverage area 6sqft.
- [High-quality Material, Meet the Needs of Longer & Better Use] 1/4 inch high quality closed cell foam has a higher anti-extrusion function compared with inferior foam product, so there is no need to worry about the collapse of the use process. Excellent adhesive has strong viscosity, which can ensure to stick firmly. High quality back paper is easy to to peel & install and not easy to tear.
- [Easy to Install, Wide Application] Aggsound heat shied pad is convenient in installation and operation. Just five steps can be completed: disassemble-clean-cute-paste-reinstallate. 7mm unviersal thickness is more suitable for the car door, hood, trunk, floor, firewall and other parts of the vehicle. You do not have to worry about the phenomenon of not being able to install because the thickness is too large but the vehicle gap is not enough.
- [Wide range of application]This sound and heat insulation material can be used in floor carpet backing, handicrafts, anti-vibration padding, furniture, to play a cushioning or sound and heat insulation effect.
- [A variety of different thicknesses to meet different needs] Aggsound offers a variety of different thicknesses of insulation foam 4mm/6mm/8mm/10mm/0.25inch/0.5inch/1inch etc.. Different thicknesses of insulation foam to meet the different needs of the application.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | AggSound |
| Model | 03 |
| Item Weight | 10.2 ounces |
| Product Dimensions | 16.54 x 4.33 x 4.33 inches |
| Item model number | 01 |

## Product Details

- **Material:** 1/4inch-Closed Cell Foam
- **Brand:** AggSound
- **Item Thickness:** 0.25 Inches
- **Recommended Uses For Product:** Car, Boat, RV Insulation
- **Product Dimensions:** 60"L x 16"W

## Images

![Sound Deadening Mat 1/4inch(7 mm) 6.54sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening - Image 1](https://m.media-amazon.com/images/I/718E4reOJ3L.jpg)
![Sound Deadening Mat 1/4inch(7 mm) 6.54sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening - Image 2](https://m.media-amazon.com/images/I/81Cm8D1VkOL.jpg)
![Sound Deadening Mat 1/4inch(7 mm) 6.54sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening - Image 3](https://m.media-amazon.com/images/I/71zG7GA2agL.jpg)
![Sound Deadening Mat 1/4inch(7 mm) 6.54sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening - Image 4](https://m.media-amazon.com/images/I/71Vn7iWO-BL.jpg)
![Sound Deadening Mat 1/4inch(7 mm) 6.54sqft - Closed Cell Foam Car Sound Deadening Material - Self-Adhesive Hood Insulation Heat Shield Auto Sound Dampening - Image 5](https://m.media-amazon.com/images/I/71C55HvwUwL.jpg)

## Available Options

This product comes in different **Material Type, Style** options.

## Questions & Answers

**Q: Does it come with installation instructions? What's the best way to install it for maximum results?**
A: 1.Remove & Clean: Take off interior panels; clean and dry surfaces

**Q: What's the difference between Aluminum Foil and Closed-cell Foam?What are the best sound deadening solutions for sound?**
A: 394mil Aluminum Foil excels in heat blocking. 157mil Closed-cell Foam (higher density) is better for soundproofing. For best results: combine 157mil foam with Butyl Sound Deadener (sold separately) to kill vibration and block noise effectively.

**Q: How do I properly install the Butyl + 157mil High-Density Closed-cell Foam combination?**
A: 1. Remove, Clean & Cut.

**Q: How do sound deadening materials work to reduce noise? Can it reduce road noise? Can it be used on car doors?**
A: Yes, Closed-cell Foam reduces road noise through:1.Sound absorption (energy to heat conversion) 2.Acoustic impedance reflection 3.Mass law blocking of mid-high frequencies. Its structure effectively reduces road/wind noise transmission into cabin.

**Q: Does it require any special tools for the installation? Is a roller necessary?**
A: Basic tools: gloves, utility knife, measuring tape. A roller (sold separately) is highly recommended to ensure proper adhesion of butyl/foam. Aluminum foil tape is essential for sealing seams. Keeping surfaces clean is crucial for optimal results.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    This makes a big difference in sound
  

*by D***. on Reviewed in the United States on September 14, 2024*

I used this in our bookshelf around the speakers to deaden that sound ,  but it would work just as well in a vehicle there.  It is easy to use and feels like a quality product.

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    Good For Car Doors
  

*by J***. on Reviewed in the United States on July 20, 2024*

This is just enough length/width for use on my two Explorer doors though it is slightly thin.  Adhesive appears to be holding - but won't know for sure unless something sticks or/if I ever need to take the door panels off again.  Backing paper with 1" grid layout is very helpful.Density is good enough for car doors, but would not recommend for hood or undercarriage since there is no thermal/foil backing.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good quality foam with good adhesive
  

*by S***E on Reviewed in the United States on September 5, 2024*

This is a good quality foam that would be good for sound deadening in a vehicle, good backing behind speakers, etc. making foam gaskets/seals (I’m thinking the HVAC box seals in a car when you have to replace a heater core). The foam itself has a nice feel to it, and the adhesive is good and tacky. Would recommend.

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**Shop now:** [https://www.desertcart.jp/products/620151883-sound-deadening-mat-1-4inch-7-mm-6-54sqft-closed](https://www.desertcart.jp/products/620151883-sound-deadening-mat-1-4inch-7-mm-6-54sqft-closed)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-29*