4 Inch Adjustable Air Vents, ABS Round Soffit Vent for Indoor Use

Very simple design that works. Very easy to install and great value for the money. It fit in the duct and is very stable.

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

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.

These replaced old metal air diffusers. Perfect fit, whisper quiet compared to the metal units. Only thing: Tabs on these hold diffuser against inside of 8” vent pipe, be prepared to secure with self tappers, as they do slide down if not secured. Great buy here!

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.

I added this to a 6” hvac duct. It comes with 3 fins to mount to the inside of the ductwork. Although a good design, I easily snapped the fins off and screwed the diffuser extension directly into the ductwork which worked well. The disc that forms the diffuser is easily adjustable and does an excellent job is dispersing air throughout the space.

It works but it's not a true 8" I tried to fit an 8" fan on it and it slides inside the fan. The vent itself looks nice and fits well in the ceiling white tiles and it's as easy as cutting a hole in the ceiling tile. I have so much air coming through I had to take off the diffuser and let it come straight out.

Perfect for a small bathroom

Very good product

has an outer sleeve that is loose

Works but not as intended. Threads on flow adjustment stripped. Hopefully a fluke ,I need to order another one anyway because its my house not a client. And hope for the best

Lasted 1 day. Since we built our house, I have a vent cover in my basement that every other month, it would fall out of the vent exaust and fall on the floor and I would have to put it back. But it survived the fall every time. I still have it, but I decided to order one of these to try them out to see if it would stay put. I placed this one instead, and the very next day, it had fallen out, but it broke and is now useless.