Product review (4 stars): So far so good
Installation was pretty straightforward and easy. Just removed old vent and pulled the tube through the wall a bit so it would be 1/2" into the new vent. Screwed into place, attach top and secure it with 2 more screws. Might add silicone around it in the future. So far seems to work to keep the bugs and rodents out, but time will tell. So far I'm pretty pleased with it.