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

+ Product Details Size - 36"w X 36"h is the size for the duct opening measurement only

+ Product Details Size – 14"w X 12"h is the size for the duct opening measurement only

4" X 12" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

+ Product Details Size - 20"w X 16"h is the size for the duct opening measurement only

14" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Fixed Blades with Damper + 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