ATCO, the worlds largest manufacturer of flexible duct offers a complete lineup of products to serve your air distribution needs. Starting with uninsulated flexible duct and continuing on with insulated products from R4.2, R6.0 & R8.0, ATCO has a flexible duct to meet any of your requirements. With a wide array of jackets, or outer vapor barriers, and four different types of inner cores, ATCO is the product for you.