18" Insulated Aluminum Flexible HVAC Duct R-8.0 – 25' Length Material_Aluminum ensuring optimal circulation throughout your

ensuring optimal circulation throughout your space

+ Product Details Size – 4"w X 10"h is the size for the duct opening measurement only

If you are looking to enhance your project with a top-of-the-line unit

+ Why HVAC Premium HVAC Premium has been providing superior quality service for many years

actual front end outer dimensions are 11

18" Insulated Aluminum Flexible HVAC Duct R-8.0 – 25' Length Material_Aluminum ensuring optimal circulation throughout your+ 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 8. 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