Rockville Rockmat RM12-B 12 Sq Ft Sound Dampening/Deadening Butyl Rubber Car Kit

Butyl Rubber = Dynamat Quality ! Video In Listing L@@K
Audiosavings Electronics Superstore
(797279)
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US $49.95
List price US $79.99 (38% off)What does this price mean?
Recent sales price provided by the seller
or 4 interest-free payments of $12.49 available with
Condition:
New
9 available195 sold
Breathe easy. Free shipping and returns.
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Free 3 day delivery
Get it by Thu, Sep 11 to 94104.
Located in: Inwood, New York, United States
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30 days returns. Seller pays for return shipping.
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eBay item number:392363582248
Last updated on Sep 02, 2025 07:38:10 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
UPC
819216020111
Country/Region of Manufacture
China
Brand
Rockville
Type
Acoustic Dampening Material
Model
Rockmat RM12-B
MPN
RM12B
Category

About this product

Product Identifiers

Brand
Rockville
MPN
RM12B
GTIN
0819216020111
UPC
0819216020111
Model
Rockmat RM12-B
eBay Product ID (ePID)
26025974240

Product Key Features

Type
Acoustic Dampening Material

Item description from the seller

About this seller

Audiosavings Electronics Superstore

97.9% positive feedback•2.7M items sold

Joined Dec 2003
Usually responds within 24 hours
Audiosavings is one of the top audio equipment retailers in the USA. We specialize in car audio, car video, car alarms, navigation, marine audio, DJ Equipment, Pro Audio Gear, karaoke equipment, ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Popular categories from this store

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Car Audio & VideoPro Audio & DJMarine and PowersportsClub & DJ LIGHTINGKaraoke Systems & PlayersHome & Portable AudioOther

Seller feedback (891,240)

All ratings
Positive
Neutral
Negative
  • o***a (100)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    It firs car sounds like Darth Vader breathing deep lls.
  • s***i (875)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Thanks again!
  • e***l (2750)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    great ebayer
See all feedback

Product ratings and reviews

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4.7
24 product ratings
  • 21 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 2 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 1 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 23 reviews
  • by danielrh87
    Mar 07, 2018Top favorable review

    Great trunk kit

    I used the kit on a volkswagen cc sport trunk lid. The dynamat in this sample kit was plenty and still have an entire sheet left over. The material was also very effective in noise muffling. I only have a single 12 but it hits. The roller was also sturdy and effecitve. I did not use the cleaning solution so have no review.(used rubbing alcohol) Veryisfied with this product.

    Verified purchase: YesCondition: NewSold by: audiosavings

  • by sforzato86
    Jul 20, 2018Top critical review

    It may not be worth it

    For my sports car it didn't seem to have helped all that much but to be fair, I didn’t measure the before and after decibels electronically only ear shot it. As for weight it seems too heavy to be applied for racing, it’s just to heavy for the minimal sound dampening it has. This may be best used for a luxury vehicle where weight isn’t an issue.

    Verified purchase: YesCondition: NewSold by: audiosavings

  • by ljcollec27
    Oct 30, 2018

    Excellent

    I have used mostly Dynamat Extreme in my builds over the past 20yrs and bought 36sqft to try this out. Quality stuff! I’m in the process of another sound quality build for the 2019 season and will be using this for the whole car! Come see me at next years World Finals and I’ll show how well this stuff is! (Rockville, if you need a SQ car to showcase your product, give me a shout!)

    Verified purchase: YesCondition: NewSold by: audiosavings

  • by siex11w3tru@deleted
    Aug 17, 2018

    Useful and pretty efficient.

    I have used it in the cargo area of my van to reduce the high pitch tone of the tin metal sheet caused by the vibrations from driving. It drasticly changes the tone of the metal sheet and absorbs really well the vibrations (I've cutted it in smaller pieces to distribute it evenly). For my personal needs, it really did a great job!

    Verified purchase: YesCondition: NewSold by: audiosavings

  • by timrobinsonbellsouthnet20122012
    Apr 14, 2020

    Excellent product

    This stuff really works, I added a sub in my trunk which caused some rattling, I treated my trunk trunk with this product and it got rid of the rattling now my stereo sounds more stronger and more solid seem like I have more bass from my sub. Where every you apply it stays it has a very strong contact even in underside applications.

    Verified purchase: YesCondition: NewSold by: audiosavings

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