14" Insulated Aluminum Flexible HVAC Duct R-8.0 – 25' Length 18in diameter width: 20px

width: 20px

Solid Rigid Steel Body For Durability and Reliability

1/2" White insulation will give you a good R value of 3

Every grille has a front end frame

14" Insulated Aluminum Flexible HVAC Duct R-8.0 – 25' Length 18in diameter width: 20px+ 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 8. 0 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