Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low View: 12 24 All Quick View Quick View Fans / Ventilation / DuctingNon-Insulated Air Duct – 6in x 25ft $23.99 Non-Insulated Air Duct - 6in x 25ft Quick View Quick View Fans / Ventilation / DuctingNon-Insulated Air Duct, 4″ – 25′ $17.99 Non-Insulated Air Duct, 4" - 25'