Sky High Car Audio 80mil Sound Deadener – License Plate Sheet

Sky High Car Audio 80mil Sound Deadener – License Plate Sheet is a targeted sound deadening sheet built to reduce license plate buzz, vibration, rattles, and unwanted noise caused by subwoofer bass.

Sold by AudioSellerz.com, this Sky High Car Audio 80mil license plate sound deadener is made for daily drivers, demo cars, trunk builds, hatchback systems, SUV builds, and any car audio setup where the rear plate rattles harder than it should. If your subwoofers sound good but your license plate buzz is ruining the outside of the vehicle, this sheet is a simple, clean fix.

License plates are one of the most common rattle points on a bass-heavy vehicle. The thin metal behind the plate can buzz, ring, and vibrate every time the low notes hit. This 80mil sound deadener license plate sheet is cut to the size of a standard license plate so it can mount directly behind the tag and add damping right where the vibration happens.

Cut for License Plate Rattle Control

The Sky High Car Audio 80mil License Plate Sound Deadener is designed specifically for the license plate area. Instead of cutting up a larger sheet, this piece is already sized for a standard plate location, making it easy to add targeted vibration control without using more material than needed.

This is a smart upgrade for vehicles with trunk bass, hatch rattle, rear plate buzz, liftgate vibration, or demo-style subwoofer systems. If you are building a complete bass setup, the Audio Sellerz complete car audio bass setup guide is a helpful read for planning how subwoofers, boxes, amps, wiring, and vehicle prep all work together.

80mil Butyl Sound Deadener Construction

This sheet uses a nominal thickness of 80 mil, equal to .080" or about 2 mm total thickness. That gives the plate area added density and damping to help reduce buzzing, ringing, and vibration when bass hits.

The construction includes a 6 mil aluminum layer for sound dampening and heat reduction on the mounting surface, combined with a super sticky butyl rubber adhesive backed with aluminum. Once installed correctly, the mat is designed to stay in place and help control the panel movement behind the plate.

Clean Sky High Branded Finish

The sheet features thick black foil with metallic white and silver Sky High logos, giving it a clean branded look if it is ever visible during the install. Most customers will mount it behind the license plate, but the finish still keeps the job looking clean and intentional.

If you are using more Sky High wiring, amplifiers, speakers, terminals, or install accessories in your build, you can shop more Sky High Car Audio products to keep the system matched.

Perfect For

• License plate rattle reduction
• Rear plate buzz from subwoofers
• Daily driver bass systems
• Demo cars and loud trunk builds
• Hatchback and SUV liftgate vibration
• Thin metal panels near the plate area
• Targeted sound deadening when full coverage is not needed
• Cleaner exterior sound during bass-heavy playback
• Vehicles where the plate is the loudest rattle point

Quick Details

• Brand: Sky High Car Audio
• Product type: License plate sound deadener sheet
• Thickness: 80 mil nominal
• Total thickness: .080", about 2 mm
• Aluminum layer: 6 mil
• Adhesive: Super sticky butyl rubber adhesive
• Backing: Aluminum-backed butyl construction
• Finish: Thick black foil with metallic white and silver Sky High logos
• Sheet size: Cut to the size of a standard license plate
• Weight: Just under 1 lb per square foot
• Best use: Behind rear license plates, thin plate panels, hatch areas, and targeted vibration control

Helps Clean Up Bass Rattles

Subwoofers move air, and that movement can expose every loose panel, thin metal area, and weak mounting point on the vehicle. The rear license plate is usually one of the first things to start buzzing. Adding a license plate sound deadener sheet behind the plate helps add mass and damping to calm down that vibration.

This is especially useful for customers running stronger subwoofer systems, ported boxes, hatchback builds, trunk systems, or daily drivers where the bass sounds good inside but the outside of the vehicle sounds loose and noisy.

Best Uses

• Behind rear license plates to reduce rattles and buzz
• On thin metal panels near the plate or hatch area
• As a targeted deadening solution when full mat coverage is not needed
• As a quick add-on for subwoofer builds with obvious plate noise

Installation Tips

• Thoroughly clean the mounting surface before installation
• Remove dust, grease, wax, and debris before applying the mat
• For best adhesion, warm both the metal and the sound deadener before installation, especially in cold weather
• Firmly roll or press the mat to remove air pockets
• Make sure the sheet has full contact with the mounting surface
• Reinstall the license plate securely after the deadener is applied

Small Sheet, Big Difference

The Sky High Car Audio 80mil Sound Deadener – License Plate Sheet is a simple upgrade that can make a noticeable difference in how clean your vehicle sounds from the outside. It targets one of the most annoying bass rattle points without requiring a full vehicle deadening job.

For shoppers searching for license plate sound deadener, 80mil sound deadener, car audio rattle control, license plate vibration dampening, or Sky High sound deadener, this sheet is the quick professional fix for plate buzz and rear-end vibration.