18" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length w20h20 + Product Details Size –

+ Product Details Size – 14"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening

The snap-lock/push-open technology allows easy access and installation on DryWall

Actual Filter Size – 13 3/4"w x 29 3/4" x 1"

Filter Size - 33

18" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length w20h20 + 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