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The DEI D-Mat Insulation (Part Number: dei50410) offers a versatile and lightweight solution for thermal and acoustic insulation in automotive environments. Designed to be installed under headliners, doors, trunks, rear bulkheads, and other interior panels, D-Mat provides effective heat reduction and noise absorption. Its advanced polymer blend construction with a scrim backing makes it pliable, easy to cut, and suitable for complex installation areas where space is limited. At only 12mm thick, D-Mat's compressibility allows it to conform to various shapes and surfaces, ensuring comprehensive coverage without adding unnecessary weight to the vehicle.
Engineered to withstand temperatures up to 325°F, D-Mat can reduce heat transfer by up to 65%, helping maintain a cooler interior environment and enhancing overall comfort. Its exceptional acoustic absorption properties contribute to a quieter ride by dampening road noise and vibrations. Additionally, D-Mat meets flammability standards and exhibits resistance to mildew and bacteria, making it a safe and durable choice for high-performance vehicles, show cars, project vehicles, muscle cars, street rods, and vintage restorations. The product is suitable for most applications with the exception of flooring, where DEI’s Under Carpet Lite is recommended for optimal insulation.
This 60-inch by 40-inch roll of D-Mat is designed for quick and straightforward installation, making it an economical and efficient insulating solution. Its lightweight nature ensures that it does not compromise vehicle performance while providing maximum thermal and acoustic benefits. Whether upgrading a show vehicle or customizing a street rod, DEI D-Mat Insulation delivers reliable, high-quality insulation for a more comfortable and quieter driving experience.
Features:
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
