18" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Powder Coated 875" width X 18" height

875" width X 18" height

with actual outer dimensions of 12

+ Product Details Outer dimensions: 9

with no sharp edges

18" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Powder Coated 875" width X 18" height+ 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