Originally Posted by rohlingerrv
Why in the world would factory use thin cheap plastic vent covers?? Oh yeah to save a few cents. well after just 3yrs mine are falling apart and have to be replace, but I never use them, can you buy a permanent vent cover?
Should have covered them with a Maxxair or Camco cover in the beginning and they'd still be good. The sun will deteriorate anything but metal ones.
As someone said, if you don't use them and don't need the light, just get some alum flashing and take the cover off and cover it and seal it with the alum flashing.