With this cover you can let in the fresh air, but not the rain. It will fit most standard 14 inch x 14 inch roof vents. It installs in about 10 minutes and is made of a high impact plastic with UV inhibitors. T he exclusive Zero-Leak Mounting System that eliminates the need to drill any holes in your RV's roof surface. Its translucent white color will still let plenty of light into the interior of your coach.

·        Constant airflow prevents heat build-up, lets musty air, smoke and cooking odors escape

·        Mounts on 14" x 14" standard roof vents

·        Made of High Density Polyethylene with maximum UV Protection

·        Angled louvers on the back of the cover allow smoke, odors, and stale air to escape

·        Removable bug screen behind the louvers helps keep out insects and debris

·        19.5 inch Length x 18.5 inch Width x 9 inch Height

·        White in Color