【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 vent covers, and various ventilation systems, enhancing overall efficiency 【Material】: Made from galvanized iron sheet metal, this vent adapter has a smooth silver finish that ensures durable performance and a clean appearance 【Easy Installation】: This rectangular to round duct is simple to install, improves airflow, and increases ventilation system efficiency 【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 (10.00 in x 3.23 in x 7.01 in) Mouth diameter: 10 cm (3.94 in) Package Includes: 1 duct transition Note: Slight variations of 1–2 cm (0.39–0.79 in) may occur due to manual measurement