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SKU: 50221 | UPC: 607078502216
DEI Boom Mat XL Vibration Damping Material – 12.5" x 24" x 4mm (4 sq. ft. Kit)
The DEI Boom Mat XL Vibration Damping Material is a premium, high-performance sound deadening solution designed for serious noise control in vehicles, boats, RVs, and commercial applications.
This 4mm thick, asphalt-free butyl rubber damping material features a thick 4-mil aluminum constraining layer that dramatically reduces vibrations, road noise, and panel resonance.
Unlike cheaper damping materials, Boom Mat XL requires only 25–50% surface coverage to achieve excellent results, saving weight, time, and money. Its superior adhesion works on vertical and overhead surfaces, even in extreme temperatures, making it the go-to choice for audio enthusiasts, custom car builders, and anyone seeking a quiet, comfortable interior.
Key Features
- 4mm Thick Pure Butyl Layer – Superior vibration damping and noise reduction
- 4-Mil Aluminum Constraining Layer – Stiffens panels and traps noise effectively
- Excellent Adhesion – Bonds securely to any clean surface, including vertical and overhead panels
- Extreme Temperature Performance – Maintains effectiveness in both hot and cold environments
- Lightweight & Efficient – Only 25–50% coverage needed for maximum results
- Easy Peel Plastic Liner – No tearing or frustration during installation
- Enhances Stereo Performance – Reduces road and panel noise for clearer, richer sound
| Spec | Detail |
|---|---|
| Part Number | 50221 |
| Brand | DEI (Design Engineering Inc.) |
| Product Name | Boom Mat XL Vibration Damping Material |
| Sheet Size | 12.5" x 24" (each sheet) |
| Thickness | 4mm |
| Total Coverage | 4 sq. ft. (2 sheets) |
| Material | Pure Butyl Rubber + 4-mil Aluminum |
| Adhesive | High-Tack, No-Snag Formula |
| Color | Black with Silver Aluminum Top |
| Country of Origin | United States |
| Warranty | DEI Limited Warranty |
Whats Included
- Two 12.5" x 24" Sheets of Boom Mat XL (4 sq. ft. total)
- Easy-peel plastic release liner
- Installation instructions
Product Notes
- Universal fit works on cars, trucks, boats, RVs, and any interior panels
- Best used as the first layer before adding mass-loaded vinyl or carpet
- Professional installation recommended for optimal coverage and results
Installation Notes
- Clean surface thoroughly before application
- Peel liner and press firmly into place (roller recommended)
- Estimated time: 30–90 minutes depending on area
- No special tools required
This Part Fits
| Application | Notes |
|---|---|
| Universal | Fits any vehicle – doors, floors, roof, trunk, firewall, etc. |
| Automotive | Cars, trucks, SUVs, and custom builds |
| Marine & RV | Boats, RVs, and recreational vehicles |
| Commercial | Sound competition and professional audio installations |
Why Choose DEI Boom Mat?
- Industry-leading vibration damping performance
- Requires less material than competing products for the same results
- Proven in demanding commercial and sound competition environments
- Trusted by professional installers and car audio enthusiasts worldwide
Frequently Asked Questions
-
Q: How much coverage do I need?
A: Only 25–50% coverage is typically required for excellent noise reduction. -
Q: Can I install this myself?
A: Yes, it’s designed for easy DIY installation with minimal tools. -
Q: Is this better than cheaper damping mats?
A: Yes, Boom Mat uses a thicker 4mm pure butyl layer and a stronger aluminum constraining sheet for superior performance. -
Q: Will this improve my stereo sound?
A: Yes, by reducing panel vibration and road noise, your audio system will sound clearer and more dynamic.
Shipping & Handling
- Method: Ground UPS or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Secure DEI retail packaging
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