We have two MaxxAire II vent covers over our 2 vent fans, they are easy to clean and were simple to install. We have standard Ramble (renamed Camping World) vent covers over our non-fan vents. All our vent covers are white and all are still intact, none are showing any significant signs of wear although they have been sitting in the full sun for the past 5 years or so. Love being able to leave them open and no water gets by them even in heavy downpours. One of my favorite mods, should come standard from the factory IMO.