The set of four universal solar panel corner brackets are made from durable, eco-friendly, UV resistant ABS plastic. Ideal mounting set for the roof installation - without drilling, strong side support for small and large solar panels, supports can be glued to the surface safely regardless of drilled holes Flexibility in installation location of the panels and the ability to clean under the panels when needed, the mounting brackets also act as a wind deflector and maintain a cooling air gap between the solar panel and the roof Can also be used on flat roofs of buildings, sheds, garages or other flat surfaces Can be used with any aluminum framed solar panel with a side length of 30cm or more< /p>