Camco 40741 RV Trailer Camper Hardware Aeroflo Vent Cover Silver Roof Vent Cover; Exterior Mount; Dome Type Ventilation; Vented On Three Sides; For 14 Inch x 14 Inch Vents; 22-1/2 Inch Length x 20 Inch Width x 9 Inch Height; Silver/ Black; UV Stabilized Resin; With Vent Assembly/ Screen/ Installation Hardware; With English/ French Language Packaging; Single Super High-Flow Fresh Air Ventilation And A Swing Open Design For Easy Cleaning Innovative, Attractive Low-Profile Design. Mounts Effortlessly Onto Existing Roof Vents 30 Percent More Open Vent Area Than A Traditional Vent Cover Leaves Your Vent Open When Youre Away From Your RV: Rain Or Shine