- UV protection and weatherproofing: The vent cover uses waterproof, reinforced Oxford fabric to shield your caravan’s ventilation cover from harmful UV radiation and exposure to the elements. - Foldable magnets for easy, secure fit: Magnetic blackout design is simple to adjust and attach thanks to foldable magnets, ensuring a secure fit on motorhomes. - Size 4141 cm: Precisely sized to fit your motorhome roof window cover and provide optimal protection from the elements. - Easy installation: Attach this RV vent cover quickly and effortlessly to your roof, ensuring maximum ventilation with minimal effort. Use scenarios: - On sunny camping trips to block UV rays while maintaining ventilation for interior airflow. - In wet or rainy conditions to protect the vent from rain and debris without fully obstructing ventilation. - When parking for extended periods or during storage to keep the roof vent shielded from sun and weather.