IronRidge XR Flush Mount Racking Kit for 4 Solar Panels, 1×4 Portrait (40mm) - We have designed this kit to accommodate a dark frame solar panel. Every component in the IronRidge Flush Mount System has been tested to the limit and proven in extreme environments: rain, wind, and snow. A rigorous approach has led to unique structural features, such as curved rails, universal fastening objects, innovative tile attachments, and