18" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Mounting Bracket actual front end outer dimensions

actual front end outer dimensions are approximately 36 5/8" width X 16 5/8" height

+ Product Details Size & Compatibility – The size of sheet metal pipe is 4" round x 24"long

+ Product Details Size – Sheet metal duct board take off start collar is 16" and it is compatible with duct 16"

Whether you’re upgrading an existing HVAC system or embarking on a new project

actual front end outer dimensions are approximately 27 5/8" width X 38 5/8" height

18" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Mounting Bracket actual front end outer dimensions+ 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