Used by U.S. Navy crew members to provide added insulation in vessels, offer a layer of fire resistance, and dampen cabin noise. You don't have to own a yacht to enjoy the benefits. A quick install in your duck blind or ice shanty will increase the warmth of your surroundings. Or add a few Panels to your garage or backyard shed, and watch happily while the mercury level rises. 36" x 24" x 2" each.