The LARGE Energy Flat Roof Mounting is engineered for the maximum flexibility possible in designing and planning for the commercial and residential roof solar system. It is applicable to install the usual framed module, The solar system can be a fixed angle or adjustable such as 10~15 degree, 15~30 degree,30~60degree and The special extruded aluminum rail, special module, clamp kit,ballasted kits and the triangle adjustable kits can be high pre-assembly and make the installation easy and quick to save your labor cost and time. The customized length can eliminate the weld and cut onsite to keep the high anticorrosive performance, the structure strength and the appearance.