The "Air Ventilator Insulated" flexible air ducts are made from two single-ply PVC fabric layers, plus one layer of PET film with a cotton barrier meant for insulation. The insulated barrier in this flexible insulated duct makes it ideal for air movement applications. It is compressible and can be easily moved around, thus making it good for either permanent or temporary air conditioning uses. Primarily meant for residential or commercial level of air ducting and ventilation, it has a shiny metallic silver appearance that allows it to bring a sleek and professional look to the job. The PVC fabric layers that make these flexible hoses are very crucial to what makes them great ducting products. The PVC material provides these ventilation ducts with a superior level of resistance against moisture, ozone and UV rays. As a result, they can be used in both indoor and outdoor applications. PVC material itself is resistant to various types of oils and alcohols, but it is best to not put this air hose in contact with more caustic chemical materials. This insulated flexible ventilation ducting is made to operate in both high and low ambient temperatures. These flex ducts can function well in temperatures ranging between -20 Degree F and 180 Degree Fahrenheit. A superior level of functionality in various temperatures is a key factor in any good air ducting and ventilation hoses. Whether your application sees a lot of very cold air or very hot air, or even both, these insulated ventilation ducts will be up to handling the task. The ends of these flexible hoses are plain cut, allowing for an easy installation process. These insulated ducting and ventilation hoses should be used in residential and commercial applications. Use this ventilation ducts for AC ventilation, cold air supply, utility blowers, HVAC purposes, general-purpose residential ducting and humidity control applications.