Pinit Clenergy EZRack Ground Washer SKU: EZ-GC-ST Grounding Clip suitable for ER-R-ST, ER-R-T, ER-R-PRO, Trapezoidal Interface, SolarTerrace II and III girder. Login for pricing DESCRIPTION SPECIFICATIONS PDFS, DOWNLOADS & VIDEOS Grounding Washer to provide bonding between the solar module frame and the racking system support rails.