The Camco Vent Cover is designed to allow fresh air ventilation and light into your RV, rain or shine. It offers high flow ventilation in an aerodynamic design. Can be installed easily by mounting to the existing 14" x 14" roof vent. Vent cover made of rugged UV stabilized resin with removable louvers for easier cleaning. Mounting hardware included. Replacement screen available (Camco #40439).