If you are looking to reduce the noise in your home or office, one solution might be to insulate the heating and cooling supply ducts with this acoustic HVAC duct liner (1" thick, 35" wide, 100' long). It's relatively easy to cut, it delivers a long lasting performance, it's virtually damage proof if used for its intended purpose, and it isn't an eye sore. HVAC systems make a lot of racket, but you can also cut down on noise (from the TV or from people) that travels from room to room through the vents. This is an affordable and labor-effective solution for many people, especially when you shop with PlumbersStock.com. It's hard to beat our savings. There is a reason so many HVAC technicians, as well as homeowners turn to the online leaders in home heating. Save big and enjoy fast shipping on 100 feet of acoustic duct liner today! Dimensions = 1" x 35" x 100'