Disintegrated vent, Warning about using vent cushion/inserts

B.O. Plenty wrote:
I've used the cushion for years. Has nothing to do with the vent falling apart. The Sun destroys them as it will the shroud on the A/C.

B.O.

DITTO....and yearly maintenance would have helped prevent this surprise. We always go thru EVERYTHING before we head out the first time in the spring. Course, now we RV full time, so we see what's happening............I hope.