Of an acorn falling from tree in campground and blowing a hole through lid on vent fan in bathroom. Well that is what just happend to me. How hard are those to replace? It has the brand name Ventline ...
Ed and the naturalist have it nailed. When those standard vent lids get a little sun baking, they become very brittle and crack rather easily, sometimes shattering. Putting on the vent covers from either camco (cheapest) or Max Air will protect the brittle vent lid. They seem to hold up very well to the sun and also give you the ability to leave the vents open, even if rain is in the forecast. Very nice to leave open when stored and not walk into an very hot, closed up camper.