Stainless Steel Air Vents, Louvered Grille Cover Vent Hood Flat Ducting Ventilation Air Vent Wall Air Outlet with Fly Screen Mesh for House (3inch)

As others have said, they are sharp edges. But what ductwork isn’t sharp. I recommend wearing gloves. Worked as needed plugged my holes and still have air to come through. I highly recommend these.

This is a much better fit for my 8" flex ducting than the prior one I tried. As mentioned in other reviews, the louvres are SHARP. Both of us were bleeding by the time we were done. The bug "grill" is pretty nice; small enough to keep out the mosquitoes. After penetrating the siding and sheathing, there was plenty of room left to secure the flex ducting.

It’s good

Just the right size for my vent!!

Good

Good fit to 6 inch pipe.

I was pleasantly surprised by the sturdiness of these vents. They also look great and do the job without issue.I use them as vents for a home server closer that exhausts and intakes air from outside, and even without any additional filtering, no bugs or anything else has gotten into the closet. They’ve stood up to half dollar sized hail and heavy rain without issue.Be careful handling them though, they have some sharp edges in a few spots.

This louvered cover is designed to direct air flow from an 8" duct. I installed it in circuit with an 8" duct fan where I wanted to direct the air upwards. The minute I unpacked it, I severely cut myself on my left index finger next to the nail and boy, did it bleed. I'm not on blood thinners, but I had to hold pressure for more than five minutes and then apply a pressure wrap bandaid to control the bleeding. This was a deep cut and it's still only partly healed. After getting the bleeding under control, I examined the product. I suspect it is made in China as are many things these days. I've done all sorts of duct work and never had a product with razor sharp edges like this item. All the surfaces end in razor edges -- the factory did not smooth or finish any of the metal after bending or forming it. I've used other louvered duct covers that were far better in quality and method of manufacture where the risk of getting cut was minimal. Because I had already partly installed this cover and could not wait to order something else for my current project, I won't return it (fortunately it is installed in an attic space where contact and more cuts are very unlikely in the future), but II would strongly advise any buyer to look at other similar products, even if higher in price, if the quality and safety of the item is better than this vent grill cover. One star is generous for this item -- I wish I could give it a zero.