2" Round White Polypropylene Plastic Louver with Insect Screen System (Priced Per Bag of 6). Item #2" PLW-100

After six years my original bird block vents screen rusted out. These vent covers are excellent for the purpose. I can highly recommend these vent covers. Perfect fit. Easy to install. Look great. Great price. I recommend these.

These things are perfect and the price is unbeatable. Keeps the birds out, durable, and easy to install. These are better than the flimsy aluminum ones you get at your typical home improvement store. Well worth the money.

I used these for through-wall vents to improve airflow between rooms inside a home. These fit snugly enough into holes made with a 2 inch (51mm) hole saw. They can be rotated to provide privacy - so no direct line of sight exists looking through them into another room.1-1/2" PVC can be sanded slightly on the outside (I used a bench grinder) to fit inside these and create a custom length airflow tube through a wall. 2" PVC will fit around the outside of these (requiring no sanding, but a larger hole saw), but then there is no flange to seat onto the wall.Pros:Price - Not overly expensive and lowest price ones I could find online.Versatility - Can be made into custom length tubes with PVC pipe.Quality - No obvious flaws or inconsistencies between the 10 or so I have used so far.Cons:Translucence - If you are looking through these from a dark room to a lit one, they appear a bit translucent, allowing a slight glow to come though the plastic from the lit room.

The Louvers were very easy to install my wife loves how they blend in with the white French door my project is a Lounge/Green House so these Louvers will keep moisture from the rafters

I bought a ton of these and put them in the soffets in the front of my house (plastic beadboard over plywood). They worked fine and fit perfectly with the proper size hole saw. My only comment is they are expensive for a piece of plastic ... but cannot beat the ease of installation so it is probably a wash from other solutions.

I was very pleased with this purchase of 2" Louvers. Fast delivery, quality of the plastic parts excellent, quantity in bags was accurate and they fit perfect. The only thing I had a problem with was my 30 year old house had several layers of paint around the holes. Luckily I had a 2" round metal deburr tool that attached to my drill and I was able to sand the layers of paint away. After doing that the louvers fit great and improved the image of my house and keeping the bees out.

We have an old house with central air installed through the floors, with round 2 inch diameter vents on the floors pointing up. They look like practice putting holes, and what with the small dog we have playing fetch with mini tennis balls, we didn't want to inadvertently make a hole in one from which we would be unable to extricate the ball.So we bought these things. They fit perfectly.They also make it sound as if a pressure hose is busted in our house - our formerly silent AC is louder than our dishwasher, washing machine and a hair dryer. Combined.Does what is supposed to, and probably works fine under eaves and in places with passive air flow, but on vents where the air is being pushed, these bad boys make it kinda difficult to whisper sweet nothing to the Mrs., if you catch my drift. Heck, they make it difficult to communicate, period.So unless you're fluent in sign language, I'd steer clear for active air flow vents with this item.

These are easy to install as long as you have a hole saw or drill bit. I put 3 at the bottom of each bedroom door to act as a pressure equalizing vent because the original A/C design doesn't include a return vent. Although I can feel air coming out of these 3 places with the A/C on, these may be a bit small. It is working better but with the A/C and the door open a crack the door still has pressure on it. I would either do more per door or look into something a bit larger. Of course the application doesn't have anything to do with the quality of the product, they work as designed and quite pleased with them.