Feature: 1. Effective Fly Protection: Equipped with a stainless steel fly screen, this RV roof vent with fan effectively prevents fly from entering your living space, ensuring a comfortable environment. 2. Powerful Air Circulation: Featuring a reversible 12V fan with 6 inch blades, 0 to 45° support rod, this vent fan efficiently exhausts stale air while drawing in freshness air, enhancing airflow in your RV. 3. Versatile Replacement: Ideal replacement for Ventline, for Jensen, and for Elixir vents, and it is compatible with roofs 1-1/4in to 2-1/4in thick, fitting standard 14 x 14in openings. 4. Wide Application: Ideal for RVs, trailers, motorhomes, buses, yachts, and other large vehicles, this vent fan is designed for versatile use across various transportation modes. 5. Quick Air Exchange: The RV vent fan allows for quick air exchange between the interior and exterior of your vehicle, providing a constant supply of freshness air for a pleasant living space. Specification: Item Type: RV Roof Vent Material: Sun Resistant Polyethylene Installation Hole Size: Approx. 340x340mm / 13.4x13.4in Fan Dimensions: Approx. 420x420x135mm / 16.5x16.5x5.3inCharacteristic:Equipped with DC12V motor, 6 inch blade, stainless steel fly screen, and support rod. Support rod adjustable from 0-45° with knob Suitable for installation on RVs, trailers, motorhomes, buses, yachts, etc. to quickly exchange indoor and outdoor air, providing freshness air for your cabin . Package List: 1 x RV Roof Vent 1 x Sealant 1 x Support Rod Knob 1 x Mounting Screws