This was for the large Critter Quitter which fits 3 inch vents.
5 stars
https://www.homedepot.com/p/Critter-Quitter-Large-Size-Plumbing-Vent-Repair-for-4-in-Lead-Flashing-3-in-Vents-CQSLM1/206442761
Bought these because of squirrels
Installed easy and quickly (4 of them) under an hour
Definitely would recommend to anyone