The New WeatherPRO® PRO Slantback Roof Vent has been tested and approved to category 2 hurricane strength winds of up to 110 mph. The WeatherPRO Series PRO Slantback is designed to allow high airflow while providing defense against weather infiltration. Manufactured from UV resistant polypropylene material the new vent has been tested to -40 degrees Celsius with no cracking or chipping. The vent also incorporates a patent pending moisture control system which directs and deflects precipitation away from the vent openings. For more information, visit www.duraflo.com.