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Description
The Dynamat DynaPad Heavy-Duty Automotive Insulation (SKU: 11101) is a premium, 3/8" thick under-carpet floor mat engineered specifically to solve two of the most challenging automotive cabin issues: low-frequency exhaust drone and intense floorboard heat. This industrial-grade insulation material uses a specialized four-layer composite barrier built on "Dissimilar Layer Insulating" technology. Weighing in at a heavy 1 lb/sq.ft, DynaPad is designed as the ultimate carpet pad upgrade for high-stress applications—such as large diesel trucks, modified muscle cars, and off-road vehicles that generate high levels of engine and exhaust noise.
Rather than relying on a single material, DynaPad layers structurally different compounds to capture and eliminate sound frequencies that standard insulation mats miss:
Water & Oil Resisting Poly Facing: The top exterior layer features a rugged poly facing that completely repels automotive oils, spilled liquids, and tracking moisture. This creates an impermeable top shield that keeps your vehicle floorboards protected from dampness and rot.
Dual Acoustic "Sound Soaker" Foam Layers: Features a heavy-duty vinyl mass barrier decoupled between two individual layers of highly efficient, acoustic foam. These foam layers isolate high-frequency road vibrations and trap airborne clatter.
1 lb/sq.ft Heavy Vinyl Barrier: Suspended in the center of the foam is a high-density, non-porous vinyl layer that acts as a physical wall to block low-frequency mechanical roar, tire slap, and exhaust hum.
Thermal Isolation Block: The combined thickness of this four-part composite functions as a powerful thermal shield, keeping radiant exhaust pipe and transmission bellhousing heat from soaking upward into your interior cabin.
High-Capacity 12 Sq. Ft. Coverage Footprint
This package contains a single, non-adhesive flat sheet providing a total of 12 square feet of commercial-grade underlayment protection:
The Cabin Floorboards: Fits perfectly across primary driver and passenger footwells to completely eliminate forward road and transmission hum.
The Interior Firewall: Drops into place along the inside firewall to isolate loud diesel engine clatter and mechanical accessories.
The Rear Deck & Trunk Floor: Spans across rear package shelves or flat trunk floors to intercept rear exhaust drone and fuel pump noise.
Technical Specification Matrix
Feature Metric
Specification Detail
Manufacturer
Dynamat
Product Line
DynaPad Under-Carpet Pad Upgrade
Total Kit Coverage Area
12.0 Sq. Ft. Total
Sheet Dimensions
54" Wide x 32" Long
Material Thickness
3/8" (9.5mm)
Material Composition
4-Layer Composite with Dual Foam & Heavy Vinyl Core
Loose Floating Underlayment (No Adhesive Required)
🛠️ Installation Best Practice: Because DynaPad is a thick, heavy, and highly stable composite material, it features no adhesive backing and is designed to sit as a floating pad directly beneath your factory carpet or vinyl flooring kit. This non-adhesive design allows the pad to be easily trimmed, adjusted, or completely removed and reused in another vehicle down the road. For absolute maximum results and to experience the true "Dynamat Difference," lay this DynaPad layer directly over an initial layer of Dynamat Xtreme vibration-damping mat.
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Refund Policy
We offer a 30-day return policy, which means you have 30 days from the date you receive your item to request a return.
Eligibility for Returns
To be eligible for a return, your item must be:
In the same condition as received
Unworn or unused
With original tags attached
In its original packaging
You must also provide a receipt or proof of purchase.
How to Start a Return
To initiate a return, please contact us at jonathon@hotrodhardware.com. Once your return request is approved, you will be provided with the return address and, if applicable, an RMA (Return Merchandise Authorization) number.
Important: Items sent back without prior authorization will not be accepted.
If you have any questions regarding your return, feel free to contact us at the email above.
Damages and Issues
Please inspect your order upon delivery. If your item is defective, damaged, or if you received the wrong item, contact us immediately so we can evaluate the issue and resolve it promptly.
Exceptions / Non-Returnable Items
The following items are not eligible for return:
Custom or personalized products (including special orders)
Hazardous materials, flammable liquids, or gases
Sale items
Gift cards
If you are unsure whether your item qualifies, please contact us before initiating a return.
Exchanges
The fastest way to receive a replacement item is to return your original item (once approved) and place a new order separately.
Free Shipping Orders
Orders that qualified for free shipping are subject to deduction of the original outbound shipping cost if the item is returned.
Refunds
Once your return is received and inspected, we will notify you regarding the approval status of your refund.
If approved:
Refunds will be issued to your original payment method
Any applicable restocking fees will be deducted
Original shipping charges (if applicable) will be deducted
Return shipping costs (if arranged by Hot Rod Hardware) will be deducted
Please note:
Payment processing fees (including PayPal, Amazon Pay, or other merchant fees) are non-refundable
It may take additional time for your bank or credit card provider to process and post the refund