Dundas Jafine AF325 Flexible Aluminum Foil Duct Dundas Jafine s flexible aluminum foil duct is ideal for general purpose exhaust applications. This duct is made from 3 ply aluminum foil laminate with a maximum operating temperature of 250 °F. Dundas Jafine AF325 Flexible Aluminum Foil Duct Features: Ideal for use in general purpose exhaust applications including clothes dryer and bathroom fans Made from a 3-ply aluminum foil laminate 250 ° F maximum operating temperature 3" x 25' Dundas Jafine AF325 Flexible Aluminum Foil Duct Specifications: Description: 3 x 25 Aluminum Foil Duct Pack Type: Bulk Pack Qty: 1