7" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Adjustable Return + Product Details Size -

+ Product Details Size - 8"w X 16"h is the size for the duct opening measurement only

5/8" - 2579 PSI

+ Product Details Size – 12"w X 4"h is the size for the duct opening measurement only

Conveniently taped together as a single piece

7" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Adjustable Return + 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 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