Title: blocks out sound
Product review: Put in my truck like most people do for the subs. I can hear no rattling it is hard to hear the bass outside the car. You have to be very close to the car just to hear the bass outside the vocals are louder oustide the car than the bass. Works excellent inside the car i can hear everything i love this stuff. You should also buy the roller if you are going to by some Dynomat.
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