I can assure Wearever and you that those vent holes are unnecessary. And if I had total control over the ...
358408
These saucepans really do wear for ever.  I have a set that's been in daily use since 2001 with no sign of ever quitting.  Just ordered a set for my winter home.  The new set has one improvement over the old set.  The large frying pan is now plain stainless.  The large frying pan on my set from 2001 was non-stick and had to be thrown away after a few years.  And I think nicer handles.  Also for some whatever reason, the new set has vent holes in the lids.  After sixteen years of daily use of the 2001 set, I can assure the folks at Wearever and you that those vent holes are unnecessary.  And if I had total control over the product, I wold go for stainless steel lids instead of glass for guaranteed wear forever capability.  If you have a ceramic tile floor or cast iron sink in your kitchen, it's just a matter of time before a glass lid slips out of your hands while washing or using, negating that wear-forever standard.  Transparent lids aren't that helpful even when they stay transparent during the cooking process, like who cares?  And frequently in actual use, they quickly fog to translucent anyhow.  And they're an accident waiting to happen.  Now the pour spouts on the pots!  Why does anybody even bother to manufacture or purchase or use pots without pour spouts?  I find pour spouts indispensable on these saucepans.
4154873
As many reviewers have said, the filters are a little small. The frame is on an angle, so the end that faces the vent is the right size (at least mine was) but the side facing you is short. Also, the actual hole in my vent is 30x14 but the vent housing is 31x14.5 so that's why it didn't fit. I bought 3/8 weather stripping https://www.amazon.com/dp/B077LJT1F8 and lined the interior of my vent with it. Now the filter fits snuggly and is sealed much better. Don't be silly and go spend way more on 3M, spend $7 and 5 minutes on weather stripping.
1811270
The holes you screw into need to be recessed so they don't stick out! I bought some little pads for 1.50$ that fixed it. And the two metal rods could be sturdier. Feel like it wouldn't take that much to really improve these. But still, they have held up my headphones like I need them to. They are sturdy enough that they hold up with only one hp at a time or two
1469513
Works as intended. However, look at your vent before you buy. My phone faces too down because my vent cannot lock.
3225335
Air is clean and odors are reduced.
However, filter is just a bit too large to sit easily in its spot. I have to mash the vent face over the exposed part of the frame and force it to seat properly, which it doesn't securely do. The face plate actually detached while driving recently, and rattled against the back of the glove box until I unclipped the box and reseated the plate.
4645055
You get what you pay for and honestly this isn't bad - As others have noted the exhaust vent at the top curls at an odd angle that restricts airflow. I get why they did it (to prevent light leaks) but they could have had it face another direction just as easily and avoided the airflow problem. The number of zippers to get in and out of the tent is kind of annoying. You have one zipper that goes up and down the middle, then one on each side on the bottom and one on each side for the top for a total of 5 zippers where they could have been clever (and probably saved money) just using 1 zipper as many other tents do. Like I said though, this isn't a bad tent for the price, the material seems to be of decent quality. The pole joints are plastic, but this doesn't seem to be an issue. It's not junk and it's cheap so there you go.
1824807
I liked this for the most part, but I find I often have to adjust it. The weight of my phone (Droid Maxx) pulls it down and it will eventually fall off if I don't re anchor it in every time. I wish it was more secure into the vent
2016541
Fit snugly in the vent holes and I can't feel any heat on the other side of them with the sun shining directly down. As long as they don't self-destruct or start emitting buckets of VOC's into the trailer for some reason I can't imagine any complaints I would have in the future.
309879
Works as designed.  You really need vents that are set back about 2 inches for the lower arm to rest on anything...
4598480
4 stars for putting unnecessary vents on the attachments, you can just cover the vents with tape to give it a stronger concentrated blast.
24654
not cheap, but really useful, very solid, but also with plenty of vent cuts
94514
I stagger the hangers..right side then left side right etc on each hole....easier and not all one sided...
1915569
Fog up quickly , I had to remove the two side vent holes to prevent this from happening.
168492
It is okay but the problem I have with it is that you have to adjust the gasket and constantly maintain the vent hole by keeping it clean.  It is frustrating when every third or fourth time in use, it decides it is not going to work properly and whatever you are cooking is ruined
2517584
Fits perfectly, and seals well.  I like that you have control of the vent.  Some of the more modern ones take that control away from you, as if you don't know that a gas tank needs venting!
632172
UPDATE: The vent mount is terrible!! The little rubber parts that are glued over the sheet metal for holding the vents just slide off.

Doesn't take very long for this to start slipping off of the vents. I also realized that the charger cable rests against the dashboard if not careful and rattles slightly against the dashboard. I didn't actually hear this going on but I did have a connector break off in the phone from all of the stress. Now that I am careful to make sure the cable doesn't rest against the dashboard it's fine, but some other holders have features in place to make sure this doesn't happen.
3064397
The rubber that goes over the the mounting posts wore off in the first six months of use.  Sharp steel sits behind the rubber that will damage the louvers on your air vent.  I can no longer use the product for risk of causing cosmetic damage to the air vent.