14" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Black This grill comes in four

This grill comes in four different designs

color: #fff

and brown – to harmonize with your interior theme

but still light and handy

Insulation density is 30kgs/cbm = 0

14" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Black This grill comes in four+ 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