• High Density Acoustic Control: Premium 80mil / 190mil composite construction with 4.0mm thickness effectively reduces vibration, panel resonance, and unwanted road noise for cleaner, more accurate sound performance
• Competition Grade Performance: Designed for serious car audio systems including SPL builds, subwoofer enclosures, and high output door setups where maximum damping and structural reinforcement are critical
• Large Coverage Pack: Includes 15 sheets measuring 10 inch x 20 inch each, providing approximately 20.8 square feet of coverage, ideal for doors, trunks, floors, roofs, and full vehicle treatments
• Strong Self Adhesive Backing: Sundown reinforced adhesive with upgraded thermal bonding ensures secure installation, long term durability, and reliable performance in high temperature automotive environments
• Improves Bass Response and Clarity: Helps seal panels and reduce energy loss, allowing subwoofers and speakers to perform more efficiently with tighter bass, improved midbass impact, and reduced rattles

Sundown Audio 80 mil Sound Deadener 15 Sheets 4.0mm Damping Kit

This Listing Includes:

• (1) Box Sundown Audio Premium Sound Deadener


• (15) Sheets 10 inch x 20 inch each

Take your build to the next level with the Sundown Audio Premium 80mil Sound Deadener, engineered to eliminate vibration, reduce road noise, and dramatically improve overall audio performance. Designed for serious car audio enthusiasts and competition level systems, this high density damping material attacks resonance at the source, creating a quieter cabin and tighter bass response.

Built using a dense soft bitumen layer combined with a high mass composite structure, this 4.0mm thick material delivers exceptional low frequency absorption and structural reinforcement. Sundown’s enhanced quality control, upgraded thermal bonding, and reinforced adhesive backing ensure long term durability and reliable installation in demanding environments.

Whether you are sealing a trunk for subwoofers, reinforcing doors for midbass performance, or treating an entire vehicle for SPL competition, this premium deadener provides the solid acoustic foundation needed for elite sound reproduction.

Specifications:

• Thickness Rating: 80mil Composite


• Material Thickness: 4.0mm


• Sheets Per Box: 15


• Sheet Size: 10 inches x 20 inches


• Total Coverage: Approximately 20.8 square feet


• Color: Matte Black


• Adhesive: High strength self adhesive backing


• Weight: 34 lbs per box


• Application: Automotive panels, doors, trunks, floors, roofs, and enclosures

Dimensions:

• Sheet Size: 10 inches x 20 inches each


• Total Coverage Area: ~20.8 sq ft per box


• Package Weight: 21 lbs