4" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length White Design – Rigid gauge built

Design – Rigid gauge built for durability and long life in mind

and matte black

allow you to customize airflow direction with ease

the second number represents the height

Suitable for all AC applications

4" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length White Design – Rigid gauge built+ Product Details High Quality Aluminum housing on the outside and on the inside for the best insulation value Insulation A thick blanket of fiberglass insulation provides you with an R Value of 4. 2 Energy Efficient Air tight inner core decreases the pressure loss and provides a more hygienic environment high energy efficient No fiberglass erosion into air stream Design Designed to withstand bends and sharp turns without kinking. Tough reinforced