5" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Adjustable Return actual front end outer dimensions

actual front end outer dimensions are approximately 21

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+ Product Details Size – 24"w X 6"h is the size for the duct opening measurement only

4" X 10" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

5" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Adjustable Return actual front end outer dimensions+ 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