L Feet mounting system is a common solution for trapezoid metal rooftop, the main parts are L Feet, Rail, Rail Connector, Mid Clamp and End Clamp.
INSTALLATION STEPS
1.Drill a hole in the correct position as planned then install the EPDM rubber pad and L Feet, and lock the screw into the roof beam below. 2.Install the Rail on the L Feet, lock the bolt tightly and make sure all Rails are in same level. 3.Install the solar panel on the Rails with the End Clamp and Mid Clamp, lock the bolt tightly.