Unlike many other noise absorption materials on the market that simply try to deaden the sound, DampTek has a very dense, very heavy, isolating layer that stops noise dead in its tracks. At 1.70lbs per sheet (That's more than one and a half pounds of material per sheet!!!) this product is of the highest quality and truly works to block the annoying frequencies of noise all across the spectrum from ever leaving your computer case. One package of DampTek is more than enough to cover a full tower computer case. This kit includes three sheets of high quality noise absorption material with a convenient self-adhesive backing. Nexus DampTek is easy to cut and shape and the forgiving adhesive allows you to remove and re-fit the material easily (unlike many other noise absorption materials on the market). DampTek is just one more great product to help transform your home or office into a more comfortable environment. Not only does this product work very well, but it gives your computer case a very modern, custom and finished look that will set it apart from the rest. Great for custom PC builds and cases with windows!