5" Insulated Aluminum Flexible HVAC Duct R-8.0 – 25' Length Fixed Blades with Damper they seamlessly integrate into your

they seamlessly integrate into your space

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

this grille boasts a natural warmth and fine finish

R value rating of insulation - r3

Insulation density is 30kgs/cbm = 0

5" Insulated Aluminum Flexible HVAC Duct R-8.0 – 25' Length Fixed Blades with Damper they seamlessly integrate into your+ 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