GMI-120 fan mount

Add a 4020 fan to cool tge GM120L grid tie microinverter

WARNING! I cannot recommend this inverter: it has serious flaws, cannot legally be used in the EU, is inefficient, will distroy itself without the fan, produces AC with many distortions...
For DIY solar projects I recommend the Hoymiles microinverters - and AhoyDTU/OpenDTU to monitor