10" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length w25h25 + Product Details Size –

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

4" X 14" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

this piece is the perfect touch of class you need to add to your decor

It has an outer surface made of high-quality aluminum foil and an inner surface made of metalized PET with inside high-tensile spring steel wire

High Quality – Solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

10" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length w25h25 + Product Details Size –+ 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