Sturdy Construction: Our galvanized transition duct made from high-quality galvanized steel,This material is resistant to rust and high temperatures, thus increasing its service life. Ease of Installation and Maintenance: This pipe transition is easy and efficient to install, simply clean the galvanized round transition before use, attach one end to the hose, secure it with adjustable stainless steel hose clamps, and then secure the other end to the rectangular pipe with screws. Improved Ventilation System: Diameter galvanized transition pipe its smooth internal design can greatly reduce the wind resistance, so as to reach the perfect wind effect, providing you with a comprehensive and effective ventilation solution. Sizes: Our microwave vent kit measures around 3-1/4 x 10 x 6 inches in size, making it ideal for a 3-1/4 x 10 inches pipe and a 6 inches diameter round pipe; With its unique air leak proof and space saving design, it is an ideal choice of advanced ventilation projects. Application Scenario: The rectangular to round duct seamlessly transitions from rectangular to round shapes, enabling a seamless connection to your exhaust fan, dryer vent cover, Hood Vent and vent seal. Color:Silver Material:Metal Package Contents: 1 * Galvanized Duct