Landpower Pre-assembled Portrait Ballasted Mounting is applicable to install module to tilt a certain angle with the roof. The Solar Racking System can be pre-designed in a fixed angle for your request and  the support is high pre-assembled,especially,this racking system highlights the function that it can be used as ballasted system by adding tray on the bottom tube,it is can be fix directly on the concrete block.The special extruded aluminum rail,the tilt-in module,the clamp kit and the round let can be high pre-assembly and make the installation easy and quick to save your labor cost and time.TECHNICAL INFORMATION  Install site ：Low profile Roof or flat roofTilt Angle ：10~30 deg (fixed)Building Height：20 mMax Wind Speed：