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 perfectly with exhaust fans, dryer vent covers, and various ventilation seals, enhancing your system's overall efficiency Material: Crafted from galvanized iron sheet metal, this vent adapter features a smooth, functional silver finish that ensures long-term performance and a clean look for your setup Easy Installation: This rectangular to round duct is easy to install, improves airflow, and increases the overall efficiency of the ventilation system Wide Application: Rectangular to round duct is ideal for residential HVAC systems, large commercial buildings, industrial ventilation systems, shops, 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 measuring