Product Overview: Vibration = noise Vibrating sheet metal is a major source of noise in most households. Washers and dryers, dishwashers, air conditioners, ductwork, and pipes create noise that can be distracting when you're trying to enjoy music or a movie. You can quiet that noise with Dynamat Xtreme. A simple, effective solution Dynamat Xtreme is a thin, lightweight vibration-damping material that reduces noise when applied to sheet metal surfaces. Through a process called "Vibro-Acoustic Energy Conversion," Dynamat Xtreme converts vibrational energy into low-grade thermal energy. The result is a noticeably quieter home. Easy to install Dynamat Xtreme has a self-adhesive peel-and-stick backing, and is pliable, so it conforms and adheres easily to sheet metal and any other hard surface. This kit includes 9 pieces, each 18" x 32". I used Dynamat to quiet the HVAC ductwork that's near my theater room, and I also applied some to my washer and dryer located in an adjacent room. It made a very noticeably improvement, especially on the ductwork. Specifications: thin, lightweight sheets reduce vibration when applied to sheet metal surfaces self-adhesive peel-and-stick design kit includes 9 pieces, each measuring 18" x 32" (36 square feet total) warranty: 60 days Our 60-day money-back guarantee MFR # 50455 What's in the box: Nine 18" x 32" Dynamat Xtreme pieces (36 sq.ft. total)