This is a continuation of this question, where I am asking about getting power to an outdoor ceiling fan.
I am using EMT and metal boxes for the rest of the install so that I don't need to run grounding wires, but the only ceiling fan rated outdoor box is this one, which is plastic. It does have a grounding lug, but I assume that since the box is plastic, the EMT/box connection won't be grounded.
So, how do I go about grounding my ceiling fan box? Can I use a "bonding bushing"? Do raintight bonding bushings exist?
I'm not super concerned about raintight since this is fully under a porch, but if code requires it I will do it.
Photo of the new box: