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 iron sheet metal, this vent adapter has a smooth silver finish for durable performance and a clean appearance Easy Installation: Simple to install, this rectangular to round duct 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 12 cm (0.390.79 in) may occur due to manual measurement