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

875" width X 18" height

+ Product Details Size - 36"w X 12"h is the size for the duct opening measurement only

with no sharp edges

Design – This duct fitting is designed for transitioning oval wall stack ducting to round sheet metal pipe

allowing you to choose the best option to suit your airflow needs

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