14" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Fixed Blades With these options

With these options

Design – Rigid gauge built for durability and long life in mind

you can watch this informative video tutorial: How to Measure Your Vent Hole Before Ordering a Grille

These grilles and registers give you an extra measure of quality that are visible to your family members and house guests

so you are not left with much waste

14" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Fixed Blades With these options+ 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 4. 2 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