12" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Sheet Metal + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 36" OR 36" x 28" duct opening (measured at the opening)

+ Product Spec Sheet Aluminum Return Grille Spec Sheet

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and sound level range of NC 25 to 35

Filter Size - 7

12" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Sheet Metal + Product Details Perfect Fit+ 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