thought I would pass this along in case anyone is thinking about ordering the "WeatherFlectors". When I finally got around to ordering a set today I was told they were a hot item and temporarily sold out. He implied that each shipment from their manufacturer is pretty much spoken for, so I went ahead and ordered. Said they expect their next batch sometime around mid April.
Oh yea,disclaimer. I am in no way associated with or...yada, yada, blah, blah....
I have the VentVisor version and they work just fine. $40 for the 4 piece set from Walmart. No noise with the windows up but there may be a little more noise with the window cracked open because the venting action is pulling air out at a faster rate.