Product review (5 stars): Hard To Find
I can not find this 3" size at Home Depot, so it was great to find it at Amazon.  Arrived in a few days and installed with no issues.  Not a super-durable vent cover, but well worth this price.  My first one lasted 15 years before falling apart, and I expect a similar time frame from this one.  Mine is in the sun all day (which wears down plastic) and gets bumped a lot by lawn care companies.  Realistically, a 4-star product with a bonus star for making it available here!