Dynamat DynaLiner 11103-OPEN BOX

1/2" Thick x 32" x 54" High Performance Insulation Kit for Doors/Floor/Roof/Hood

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Dynamat DynaLiner High Performance Insulation Kit

Dynaliner is a polyether, urethane-based, thermo- acoustic foam made to be used in conjunction with Dynamat sound deadening material. Dynaliner material can withstand temperature ranges between -40° - +225°. It is made with a combination of open and closed cells to accept and dissipate sound waves. The acoustic foam in Dynaliner is cast in sheets for consistent levels throughout the foam, to assure maximum sound absorption.

DynaLiner Applications

DynaLiner is typically used on top of Dynamat to provide high acoustic absorption and excellent thermal insulation. It is not affected by oil and does not absorb water. This kit contains one 1/2" thick 32" x 54" self adhesive sheet and is perfect for the roof, firewall, floor, quarter panels, doors and more.

Easy Installation

Use scissors, knife or die to cut Dynamat Dynaliner to the desired size and shape before removing the release liner. Next, remove dust, grease, moisture, and other foreign matter from the application surface. Now it’s time to peel off the release liner and start applying. The easiest way to apply is to bend the mat slightly and attach it along its shortest edge and pressing it firmly into place.

What Size Dynaliner Do I Need?



Under Hood

Under Trim (Doors)

Fiberglass Enclosures

Product Features
  • 1/2" DynaLiner High Performance Insulation Kit
  • Used on top of Dynamat to provide high acoustic absorption and excellent thermal insulation
  • Contains one 32" x 54" sheet
  • Covers a total of 12 square feet
  • High heat blocking properties
  • Ultra lightweight & flexible
  • Not affected by oil and does not absorb water
  • Isolates vibrations and reduces unwanted noise
  • Perfect for roof, firewall, floor, quarter panels, and door applications
  • Easy self adhesive installation

Sound Dampening Specifications

Installation Location
This is the area of the car that the sound dampening kit is designed to be installed.
Entire Car
Material Thickness
This is the thickness of the material, measured in inches.
Total Amount of Material
This is the total amount of material that is included in the package. It is measured in square feet. On packages that include several smaller pieces, this number combines all the pieces together.
12 square feet
Material Use
Use of material whether it be used for heat protection, sound absorption or decrease in vibration.
Sound Absorber
Secondary Use
This is the secondary use of the product. Many products that block road noise can also serve as an effective heat barrier, and vice versa.
Vibration Decoupler


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Warranty and Return Policy

Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

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Average Attribution Rating

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Browse 2 questions and 3 answers
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Why did you choose this?
Sonic Electronix Store
Price. Haven't seen this item this cheap. Free shipping is very important due to weight.
Andrew S on Jul 19, 2015
The price was great compared to other products ,will install over my dynamite to finish up my soundproofing project
Charles T on Oct 13, 2014
Does this do a good job of silencing outside noise?
A shopper on Sep 17, 2015
Best Answer: It varies from vehicle to vehicle. If you are able to Dynamat the part of the car that transmits the most noise, then yes it is very effective. I covered the entire floor, door panels, rear deck, and rear interior panels on my 1996 Jeep Cherokee (a fairly noisy car). When I'd finished, it was eerily quiet--almost like a Lexus. Warning: if you are able to silence much of the low pitch noise that is transmitted through panels and surfaces, higher pitched (and quieter) squeaks and rattles may become more evident.
Reply · Report · glenn s on Sep 17, 2015
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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Dynamat DynaLiner 11103-OPEN BOX

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Dynamat DynaLiner 11103-OPEN BOX

1/2" Thick x 32" x 54" High Performance Insulation Kit for Doors/Floor/Roof/Hood


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