Retrofitting 360 Siphon Vents on Existing Vents
The RV Geeks show you how to do an install by removing the old vent. The 360 Siphon Vents can also be retrofitted on an existing vent.
I found retrofitting to be easier, faster and require fewer tools than the full-removal method.
If you have a vent that can be retrofitted, I recommend doing it that way. If it doesn’t work out, you can always do the full-removal method afterwards.