Description: Material: Made from galvanized steel, this Roof Vent ensures durability and long term use. The high performance polyester powder coating offers strong anti corrosion properties and good resistance to rustEfficient Air Flow: The 6 inch Exhaust Vent comes with a backdraft damper that maintains air flow up to 75%, ensuring efficient ventilation while minimizing backflowAnimal Proof Design: This Roof Dryer Vent equipped with a mesh cover featuring approximately 3mm grid spacing, effectively preventing small animals or birds from entering your ventilation systemEasy Installation: The Roof Exhaust Vent Cap includes a duct extension located beneath the flange for easy connection to flexible ducting. It features four pre drilled holes on the panel to help you securely mount it onto bathroom exhaust fan roof jacksVersatile Application: Designed for maximum air flow and protection, this Roof Vent Cover is compatible kitchen and roof exhaust systems. It can be used in conjunction with 6 inch ducts and exhaust fans for effective home ventilation Specification: Package Size:30cmx25cmx15cm/11.81inchx9.84inchx5.91inch Package Includes: 1Roof Vent Cap4 Screw Note: Please allow slightly errors 1-2cm differences due to manual measurement.