The K2 StairPlate is the perfect solution for installing Micro Inverters and Optimizers. With the StairPlate, these devices can be easily hooked into almost all K2 mounting rails without having to screw them directly to the roof. The units are attached to the K2 StairPlate in advance with the appropriate screws and nuts. Please note the height of the modules and the units to be used. Can only be used to a limited extent when using AddOn. Material: Stainless steel