14" Insulated Aluminum Flexible HVAC Duct R-8.0 – 25' Length 18in diameter The first number in a

The first number in a grille size represents the width

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

accordion dt { margin-bottom: 10px

1-1/8” - 2334 PSI

14" Insulated Aluminum Flexible HVAC Duct R-8.0 – 25' Length 18in diameter The first number in a+ 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