Adjustable Air Vents, ABS Round Soffit Air Vents Exhaust Wall Ceiling Vent Wall Ceilling Cover for Indoor/Outdoor Use (4'')

For too long I thought about getting something like this so my A/C wasn't wasted being pumped into my basement when it would come down the stairs eventually anyway. Since installing them (easy even for a total amateur standing on a swivel chair) my A/C turns on far less often and it stays cold upstairs way longer!

Highly recommended, easy to install in uses. It is plastic but one installed in a wall or ceiling you wouldn’t know if you paid $8 or $80 and it works as you would expect

Would have given 5 stars, however, there are scratches and marks on it that make me wonder if it’s new or if it’s just not well taken care of during manufacturing. Other than that, it works as intended and is super easy to install.

had air ducts install in basement. The installer did not have any vent covers and suggested i order some on line. These were perfect for what I needed, Easy to install, look nice, and good price.

It does the job. It does not have 4" in dimmer. You have to cut the 4" flex pipe and use aluminum tape to do the connection.