Hon&Guan 4 Inch Dryer Vent, Stainless Steel 4 '' Soffit Vent Wall Vent Cover for HVAC System

Quedó muy bien, le da una vista muy agradable a la salida de la chimenea, me agradó que trae guantes para manejar el producto sin rayarlo, hay que tener cuidado al manipularlo pues es muy filoso en los bordes

Some edges are a bit sharp

These things are OK. I bought one and liked it enough for my application that I bought two more.I'm using them for engine exhaust outlets on electric generator enclosures. They keep the weather and bugs out while not restricting exhaust flow. When the gasoline engine exhaust has to push on a flap or damper to open it to let the exhaust flow out, that causes back pressure and encourages carbon monoxide build-up in the generator enclosure. That's not a problem with these because they do not restrict the exhaust flow at all.A four inch flexible pipe and this work great to channel engine exhaust out and away from the generator shelter. I use three "L' brackets with niobium magnets fastened to the semi-flexible aluminum pipe to secure the exhaust line to the muffler on the generator. This allows easy detachment to remove the generator from the enclosure for servicing. A line of Loctite red RTV high temperature adhesive sealant around the opening of the pipe that rests on the muffler makes a decent gasket/seal. All this works quite well as long as there's no restriction causing back pressure to force exhaust gasses out of the pipe where it joins the muffler. So these are a really good solution for that application.They're also competitively priced compared to metal dryer vents.Another plus is that they don't have the protruding ducting tube that dryer vents do, which makes for an easier, more compact installation in these generator enclosures. Simply insert the semi-flexible pipe into this fitting and seal it with aluminum foil ducting tape. Don't use regular duct tape, use aluminum foil tape.I think they look great. They look more professional for this kind of thing than a metal dryer vent. I mount them so that they're directed down and at a 45 degree angle away from the building the shelter sits near. That keeps the weather out and directs exhaust and noise down and away from the building. Paper wasps will nest inside this, they can't get past the screen so they build on the outside of the louvers and screen because it is a compact, sheltered area -- Exactly the kind of thing they like. What they don't like is getting gassed and cooked when the generator starts ...These things are stamped and formed metal. Like ALL such things they have very sharp edges from the manufacturing process. That's not a manufacturing defect or a quality control issue. If you cut yourself on this that's YOUR FAULT for not handling them properly. I haven't gotten so much as a nick from these, or any other stamped, formed or cut sheet metal, for a very long time. Show some good sense and you'll be fine. If you cannot handle an object like this or any other sharp object without seriously injuring yourself then DIY and handyman projects are not for you. If that's the case go hire someone who won't lose a finger on a simple piece of hardware.

CUMPLE SU FUNCIÓN.

After reading all the reviews, I thought I would be getting a poorly formed object that would require me to wear heavy duty gloves to keep from cutting myself. And that it would be considerably undersized. Having done duct work all my life, I WAS prepared!BUT...What I received was a very wll designed and great looking air vent. ALL the exposed edges that one would encounter when installing were properly rolled and NOT the least bit sharp or dangerous. However, the INSIDE edges, which one should never have a need to touch, were just as they came out of the machine that made it...quite sharp. But I can see no reason for ever having to stick my hand or finger inside the unit. As I said, ALL the outside edges that will be handled are rolled, not the least able to cut anything and safe.As far as being undersized, the size you are buying is NOT the size of the unit, but the suize of the duct it is to fit in. I replaced a plastic vent in my 4" duct, and this nw vent fit perfectly. It requiired me to press it fairly tightly into the duct, and the little tabs grabbed the side of the duct just as they should.A duct's stated size is the outside diameter...4 inches in this case. And for something to fit inside that duct, the thickness of the material has to be considered. The end of a 4" duct that fits inside another duct is about 1/8 of an inch narrower than the end it is going into. That is why this vent is smaller than 4 inches...so that it can fit Inside the 4 inch duct...which it does perfectly. All in all, a very nice looking, easy to install and safe vent. Me and my furnace are very happy.