Installation kit included all the brackets and hardware I needed. No hardware-store run.

Butyl Rubber Sound Deadening Mat – 36 x 48 in, Black, Heavy-Duty
In stock · Ships from Humble, TX
U.S. orders
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Description and specs
This butyl rubber sound deadening mat reduces road noise and vibration for car audio systems. DIY installers choose it for its professional-grade thickness and heat resistance. Pre-cut panels fit common vehicle sections without excess trimming.
Key Features
- Butyl rubber core — stays flexible in extreme temperatures without cracking, rated for -40°F to 248°F operational range
- 2.5mm thickness — blocks 30% more noise than standard 1.5mm mats based on ASTM E90 sound transmission tests
- Self-adhesive backing — applies cleanly to metal surfaces with included roller tool, leaving no residue during removal
- Matte black finish — resists UV fading and blends with interior panels for discreet installation
Construction
80% butyl rubber, 20% aluminum composite layer. Clean with isopropyl alcohol before application.
Package Contents
Six 36 x 48 inch panels, application roller, trim knife, installation guide.
Technical Specifications
Material thickness: 2.5mmPanel size: 36 x 48 inchesTemperature range: -40°F to 248°FWeight per panel: 4.2 lbsCoverage area: 18 sq ft per pack
Shipping
Free shipping within the United States on eligible orders. In-stock items typically leave within 1-2 business days. Local pickup available at 17717 Highway 59 N, Humble, TX. Read full shipping policy.
Returns
Uninstalled, resalable products may be returned within 30 days with an RA number. Vehicle-specific modules and opened wiring kits are non-returnable. Read full return policy.
Customer reviews
Doors feel solid and the new speakers image better. Messy job—glad the shop did it.
Labels on the wiring made DIY routing easier before I brought it in for final terminate.