Here is the latest Home Depot recommendation. 4 stars. To address some of the comments about cutting, we have tried to make this as simple as possible with embossed pitch lines to follow. Any saw will work, even tin snips. Hardest part is holding the unit, but it can be wrapped in a towel at the head and held onto the lawn, or even wedged into a tire. Here is the recommendation

Ingenious product that works. Only negatives, you have to cut the roof angle yourself and that was a little tricky. I purchased 5 units and installed 4. It took a little over an hour to cut the roof angle on all of them and install them.