5" Insulated Aluminum Flexible HVAC Duct R-8.0 – 25' Length Fixed Blades with Damper order a 14x20

order a 14x20

Plain Ends - Gives you the freedom to cut and flare at your own project needs

this grille boasts a natural warmth and fine finish

Powder-Coat Finish – Never rust

+ Product Details Size - 18"w X 30"h is the size for the duct opening measurement only

5" Insulated Aluminum Flexible HVAC Duct R-8.0 – 25' Length Fixed Blades with Damper order a 14x20+ 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