Okay, I did a little more digging. According the PDF on their site, the solar panels are UL 1703 rated. What does that mean? 1703 is an older less stringent standard especially when rating for hail. UL 61730 has been the standard since 2019. What does that mean? Well if you set up these panels in a hail prone area, they will be damaged by lesser hail than if they would have been built to the UL 61730 standard. Further these panels are in the 12 volt class. This means lower efficiencies over all. Not much, but some, meaning you are buying watts you will not be able to use. Think 85% verses 95% if you used higher voltage panels.

Again, let me know if you have additional questions.