ISTOVO Roof Vent Cap-Roof Vents 4 Inch Steel Bathroom 4 Roof Exhaust Vent for Ventilation System

roof dryer vent is designed for maximum airflow and protection, to be used with kitchen and roof exhaust venting systems, can be used in conjunction with 4 inch duct and exhaust fans for house ventilation. High-quality galvanized steel to durability and long-lasting use. The high-performance polyester powder coating has strong resistance and excellent protection. 4 inch roof vent with backdraft damper still have an airflow of UP TO 75%. The roof vent 4 inch comes with a 120mm x 90mm mesh cover, with a grid space of about 3mm to effectively prevent the entry of small animals or birds. 4 inch vent includes a pipe extension located underneath the flange for connecting to flex ducting, and there are four holes in the panel, which can help you install on the 4inch bathroom exhaust fan roof jack more firmly., Weight: 3.00269600844 pounds, Manufacturer: ISTOVO