Product review (4 stars): Working great, seems a little thin
This is not hard to install.  I had to drill four holes carefully to match mounting screw holes I already had on my former dryer vent, but no biggie.  You might not have to do that.  I also placed a strip of garage door rubber behind the top bracket to help absorb any overhead blows that might come in the future.  Overall, it works great.  Because it's winter I did not paint it yet to protect it from UV.  The only complaint is it seems so thin, i.e. it seems they could have made the plastic thicker for at least the appearance of more robustness.  Still, great improvement to traditional dryer vents.