【Rectangular to Round】: Seamlessly transform your ductwork with this duct transition, designed for optimal flow 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 / 10.00 in x 3.23 in x 7.01 in Mouth diameter: 10 cm / 3.94 in Package Includes: 1 duct transition Note: Please allow slight measurement differences of 1–2 cm / 0.39–0.79 in due to manual measurement