16" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Floor Grille Toe Space + Product Details Size -

+ Product Details Size - 25"w X 34"h is the size for the duct opening measurement only

+ Product Details Size – Stick-on collar is 7" and it is compatible with duct 7"

High Quality – High quality powder coated steel

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 18" OR 18" x 30" duct opening (measured at the opening)

16" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Floor Grille Toe Space + 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