Product review (5 stars): No more frigid floors by our dryer!
Our old dryer vent had lost it's flap, and the 30+ Maytag dryer is all metal, so when it is -5F outside, the dryer was COLD, and pulled all the heat from the surrounding area, leaving a frigid floor, cold air, etc. We were paying to heat the outside through our closed dryer.

This Heartland 21000 Dryer Vent works flawlessly. Our laundry room was never colder than it should have been this past winter, and it was a cold winter here in the midwest!

I installed it last autumn. The dryer vent pipe coming out of the wall was also a tiny bit too large, but I cut some slots in it with tin snips and it compressed well so that there was a nice tight seal with no gaps. I should probably add some shims alongside the pipe to make it look nicer. (See the photo I uploaded.)

The color is a bit odd, but we'll just paint it when we repaint the siding this summer. Regardless, it works really well and kept our laundry room much warmer this past winter!