4 in. x 25 ft. Insulated Flexible Duct R6 Silver Jacket
https://www.probuilderswarehouse.com/shop/394317-0-4-in-x-25-ft-insulated-flexible-duct-r6-silver-jacket-625651
https://www.probuilderswarehouse.com/web/image/product.template/625651/image_1920?unique=b31ad15
Brand: Master Flow
Model: F6IFD4X300
SKU#: 394317.0
Barcode: 100396934
