6" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Fixed Blades actual front end outer dimensions

actual front end outer dimensions are approximately 5

+ Product Details Size - 20"w X 30"h is the size for the duct opening measurement only

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Installation Location – sidewall and ceiling

and the second number represents the height

6" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Fixed Blades 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