Rectangular to Round: Seamlessly transform your ductwork with this duct transition, designed for optimal airflow and easy system modification. Compatibility: This versatile galvanized transition connects with exhaust fans, dryer vents, and various ventilation systems, enhancing overall efficiency. Material: Made from galvanized steel sheet metal, this vent adapter has a smooth silver finish that ensures long-lasting performance and a clean appearance. Easy Installation: This rectangular to round duct is simple to install, improves airflow, and increases the overall efficiency of the ventilation system. Wide Application: Suitable for residential HVAC systems, commercial buildings, industrial ventilation, workshops, manufacturing facilities, commercial kitchens, and agricultural settings. Size: 25.4 cm x 8.2 cm x 17.8 cm (10 inches x 3.23 inches x 7.01 inches) Mouth Diameter: 10 cm (3.94 inches) Package Includes: 1 Duct Transition Note: Please allow slight measurement variations of 12 cm (0.390.79 inches) due to manual measurement.