18" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length 8in diameter + Product Details Size -

+ Product Details Size - 4"w X 20"h is the size for the duct opening measurement only

Compatible with 24x24 openings and built from durable

order a 14x20 grille

Use our 99

actual front end outer dimensions are approximately 18 5/8" width X 10 5/8" height

18" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length 8in 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