Bought these a few years ago and never installed them. Been sitting in my garage. Price is for both. Sell on Amazon for $54 each. Description from manufacturer : Description The Original Vent Cover mounts on 14" x 14" standard roof vents, and features our exclusive ZERO-LEAK Mounting System that eliminates the need to drill any holes in your RV's roof surface. Dimensions: 19.5” length x 18.5” width x 9” height. Features & details Protects your RV's interior from rain Constant airflow prevents heat build-up, lets musty air, smoke and cooking odors escape Proven, super tough one piece design Mounts on 14" x 14" standard roof vents Color: White ; Made of High Density Polyethylene with maximum UV Protection Maxxair Original Vent Cover ; Sleek, aerodynamic design reduces wind resistance The Original mounts on most popular 14 inch x 14 inch standard roof vents, and features the exclusive Zero-Leak Mounting System that eliminates the need to drill any holes in your RV's roof surface Six-year Limited Warranty. 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