K2 StairPlate Set – the K2 StairPlate allows microinverters and optimizers from SolarEdge, Huawei, and Enphase to be hooked into all K2 rails without being directly screwed onto the roof. The devices are pre-attached to the K2 StairPlate with the appropriate screws and nuts. The height of the modules and the devices used must be considered. PU=1 pc.