Reduces Vibration For Clearer Sound: The Dynamat En-Wall Kit contains everything you need for clearer, more focused sound with less vibration and unwanted noise transfer to other rooms Better Sound, Quieter Living: Dynamat is the heavyweight of sound control, the industry leader in home audio and architectural soundproofing; our products help you keep the sound you want in, and the sound you don’t out For 4 inch Walls: En-Wall combines Dynamat Xtreme, Back-wave foam and the SoundSnake to damp, diffuse & decouple in-wall speakers, creating an optimal acoustic environment for delivering premium sound quality Easy to Install: This kit contains everything you need to isolate one in-wall speaker; the sound snake bends around the speaker, the back foam eliminates noise and distortion, while Dynamat Xtreme attaches to the drywall to dampen sound & vibration Made in the USA Since 1989: Dynamat is the original & most trusted name in soundproofing & heat control. En-Wall significantly reduces wall vibration, projects more clear sound into the room and reduces unwanted noise transfer through walls. En-Wall combines Dynamat Xtreme, Back-wave foam and the SoundSnake to damp, diffuse, and decouple in-wall speakers. En-Wal encases in-wall speakers creating an optimal acoustic environment for delivering premium sound quality. Home theaters, noisy appliances, air conditioners, TVs, stereos, and exercise equipment all add to the enjoyment of your family’s daily life. When it’s all happening at the same moment, it’s noise. Combined with outside noise from planes, trains, and automobiles – you have ample reason to want to get away from it all. That’s why Dynamat has developed a line of quality acoustic products designed for Better Sound and Quieter Living. Dynamat is the original & most trusted name in soundproofing & heat control; our products are the first of their kind, and are always made at our headquarters in Ohio.