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.

Perfect item, perfect seller.

This worked for my purposes. My house has return air through the walls. I had the furnace replaced and it pulls more air than the old one did. After checking the duct, I realized it was spliced into a sealed space. I removed the extension and covered the hole but the force from it kicking on and off would cause the existing duct to pop. I tried a couple different grilles but they all caused whistling. This one doesn't. The louvers are extremely thin and in turn are very sharp. I sliced my hand open while installing it without even realizing it. I doubt my 6 mil nitrile gloves would have saved me. Be careful!

These covers are well made, and fit perfectly over the two round 8" air intake vents in my basement. The vents come with a metal mesh lining that is about 1/8 of an inch per mesh square. I added my own foam rubber filter on top of this - which was cut to an 8" diameter, using an Exacto knife and an 8" inch dinner plate as a template. This foam rubber measures about 1/8 inch thick, and you can buy it at any hardware store. I anticipate cleaning the foam rubber filter once a year when I service the furnace. The installation of these covers looks nice, and very professional. Prior to finding these covers, I was manually cutting filters, and, with some difficulty, taping them onto the air intake ducts. And I can say, that chore was not fun at all. These covers completely eliminate that chore - as they come off easily for service, and the foam rubber filter can be washed out, and reused. Problem solved.

Worked well

Just the right size for my vent!!

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.