5" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length w8h8 75" width X 11

75" width X 11

+ Product Details Size – 12"w X 18"h is the size for the duct opening measurement only

3 * Insulation density is 30kgs/CBM = 0

+ Product Details Size – 4"w X 8"h is the size for the duct opening measurement only

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5" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length w8h8 75" width X 11+ 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