4" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Fixed Blades + Product Details Size -

+ Product Details Size - 18"w X 30"h is the size for the duct opening measurement only

+ Product Details High Quality - Aluminum housing on the outside and on the inside for the best insulation value

+ Product Details Size - 24"w X 24"h is the size for the duct opening measurement only

enhancing the entire room with its elegant presence

75" width X 37

4" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Fixed Blades + Product Details Size -+ 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