Suninergy adjustable front and rear legs are designed for trapezoidal and corrugated metal rooftops. They can be used directly on the roof or combined with different clamps. The tilt angle is adjustable within 10–15°, 15–30°, or 30–60° ranges to maximize solar generation efficiency. Custom rail lengths require no on-site welding or cutting, maintaining aesthetic integrity, structural strength, and corrosion resistance.