5" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Aluminum - Cube Core Installing a collar is the

Installing a collar is the first step when installing the system of ducts

+ Product Details Size - 3" Diameter is the size for the duct opening measurement only

High Quality – Heavy-gauge all-steel construction

+ How To Measure An Access Panel Overall Size:

actual front end outer dimensions are 11" Width X 11" Height

5" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Aluminum - Cube Core Installing a collar is the+ 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