--- product_id: 561954117 title: "Car Heat Sound Deadening Insulation Mat, - 394 Mil 6.5 Sqft Automobile Sound Deadening & Heat Insulation Material for Auto Hood Engine Roof Door and Trunk,40 Inch x 24 Inch, Aluminum Foil Finish" brand: "allwin" price: "¥20901" currency: JPY in_stock: true reviews_count: 8 category: "Allwin" url: https://www.desertcart.jp/products/561954117-car-heat-sound-deadening-insulation-mat-394-mil-6-5 store_origin: JP region: Japan --- # 394 mil thickness for max insulation Blocks 98% radiant heat transfer 6.5 sqft coverage, easy cut & install Car Heat Sound Deadening Insulation Mat, - 394 Mil 6.5 Sqft Automobile Sound Deadening & Heat Insulation Material for Auto Hood Engine Roof Door and Trunk,40 Inch x 24 Inch, Aluminum Foil Finish **Brand:** allwin **Price:** ¥20901 **Availability:** ✅ In Stock ## Summary > 🔥 Silence the noise, block the heat, own the road! 🚗 ## Quick Answers - **What is this?** Car Heat Sound Deadening Insulation Mat, - 394 Mil 6.5 Sqft Automobile Sound Deadening & Heat Insulation Material for Auto Hood Engine Roof Door and Trunk,40 Inch x 24 Inch, Aluminum Foil Finish by allwin - **How much does it cost?** ¥20901 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/561954117-car-heat-sound-deadening-insulation-mat-394-mil-6-5) ## Best For - allwin enthusiasts ## Why This Product - Trusted allwin brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Application:** Perfect for hoods, doors, trunks, wheel arches, and more—upgrade every inch of your vehicle’s comfort and style. - • **Waterproof & Odorless:** Lightweight, moisture-resistant foam ensures no soggy mats or funky smells—just pure performance. - • **Ultimate Thermal Shield:** 394 mil thick closed-cell foam blocks extreme heat from -40°F to 300°F, keeping your ride cool or cozy year-round. - • **Next-Level Noise Control:** Dampens engine, exhaust, and road noise for a serene driving experience that sets you apart from the crowd. - • **Precision Fit & Flexibility:** Sized at 40x24 inches with flexible sheets that cut and conform effortlessly to any car surface—no roller needed. ## Overview This 394 mil thick aluminum foil finished sound deadening mat covers 6.5 sqft and blocks 98% of radiant heat, providing superior thermal insulation and noise reduction for vehicles. Waterproof, odorless, and flexible, it installs easily on multiple car surfaces, enhancing comfort and driving pleasure in all seasons. ## Description 394 mil (10 mm) Car Sound Deadening & Heat Insulation Closed Cell Foam - PE Foam Sound DeadenerStrong sound insulation and absorption performance, heat insulation, Reducing energy consumption with the strong performance of heat insulationStrong self-viscous performance Review: Worth it - I used this to insulate a dog house. Worked better than I had anticipated. Good stuff. Easy to use. Review: Works well, easy to cut, and sticks well - Easy to use, and cut. Not very forgiving of moving once placed, so don't peel till its ready to stick. ## Features - Sound deadening material size: Nominal thickness 394 mils; Total coverage area of 6.5 sqft; Nominal sheet Size 40x24 inches. working Temperature Range: -40°F ~ 300°F - Heat Insulation and Vibration Deadener: Effectively blocks 98% of radiant heat transfer. Sound deadening mat is a very versatile insulation material with excellent thermal barrier properties that will block engine, exhaust, & summer heat, ensuring your vehicle stays cooler in the summer and warmer in the winter, making your ride more pleasant! - Automotive self-adhesive insulation is a waterproof lightweight thermal deadener with a highly compressible closed-cell foam formulation, it absolutely doesn’t absorb moisture and has no odor - The sound dampening mat can be applied to external partitions, firewalls, hoods, engine compartments, engine compartments, trunks, wheel arches, body panels, load floors, and internal partitions under the seat floor. - The sound dampening material comes in handy size sheets which make it easier in terms of the cutting and installation process and it’s flexible which makes it easy to install with or without a roller. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CD1GDK95 | | Best Sellers Rank | #30,683 in Automotive ( See Top 100 in Automotive ) #39 in Automobile Insulation | | Brand | ALLWIN | | Brand Name | ALLWIN | | Coverage | 6.5 sqft | | Customer Reviews | 4.4 out of 5 stars 189 Reviews | | Included Components | Sound deadening mat | | Item Dimensions L x W | 40"L x 24"W | | Item Thickness | 394 mils | | Item Type Name | Sound deadening mat | | Manufacturer | ALLWIN | | Manufacturer Part Number | ALL1040 | | Material | 394 Mil | | Material Type | 394 Mil | | Model Number | ALL1040 | | Number of Items | 1 | | Product Dimensions | 40"L x 24"W | | UPC | 616943701562 | ## Product Details - **Brand:** ALLWIN - **Item Thickness:** 394 Mils - **Manufacturer:** ALLWIN - **Material:** 394 Mil - **Product Dimensions:** 40"L x 24"W ## Images ![Car Heat Sound Deadening Insulation Mat, - 394 Mil 6.5 Sqft Automobile Sound Deadening & Heat Insulation Material for Auto Hood Engine Roof Door and Trunk,40 Inch x 24 Inch, Aluminum Foil Finish - Image 1](https://m.media-amazon.com/images/I/51AF62GIXkL.jpg) ## Available Options This product comes in different **Set** options. ## Questions & Answers **Q: What’s the difference between 197 and 394? Mil. I see the 394 is higher** A: The Siless sound deadener thermal shield max is a good 16th of an inch thicker and not as pliable **Q: How much does it weigh???** A: Using a digital bathroom scale 1 pound per 11 3/4” X 15 3/8” sheet each **Q: Is this fire proof as I dont have alot of clearance between engine and cover ?** A: As I understand, it's not fire proof but it's fire resistant . ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth it *by L***R on May 20, 2026* I used this to insulate a dog house. Worked better than I had anticipated. Good stuff. Easy to use. ### ⭐⭐⭐⭐⭐ Works well, easy to cut, and sticks well *by K***H on August 29, 2025* Easy to use, and cut. Not very forgiving of moving once placed, so don't peel till its ready to stick. ### ⭐⭐⭐⭐ Worked good. *by S***9 on July 11, 2024* Works great and is enough to do one door, the foam is like weather striping and seem very good, the product does have some smell but nothing that was over whelming. I installed this into a van door for some road deadening and insulation from heat. The adhesive is very sticky! With some laying out and though, installing mostly easy. --- ## 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.jp/products/561954117-car-heat-sound-deadening-insulation-mat-394-mil-6-5](https://www.desertcart.jp/products/561954117-car-heat-sound-deadening-insulation-mat-394-mil-6-5) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-24*