panels i used

https://www.amazon.ca/gp/product/B07GF5JY35/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

the spacer washer was used to keep my chargew conntroller off the wall for better air flow

and used a 50% in fill on everything here for security and when on the hwy at 110kmh no damage or warping the mounts have ocured with them on the roof of my van for last 2 years they servived -40c and 50c for weeks at a time