5" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length 14in diameter + Product Details Size –

+ Product Details Size – 12"w X 20"h is the size for the duct opening measurement only

such as a screwdriver or even a coin

+ Product Details Size – 12" x 14" or 14" x 12" is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 20" OR 20" X 14" duct opening (measured at the opening)

5" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length 14in diameter + 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 6. 0 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