5" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Adjustable Return 4" X 10" Is The

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

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positioning supply and return grills accordingly

Heavy Gauge Steel

much more than required 700 PSI for R410

5" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Adjustable Return 4" X 10" Is The+ 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