Was thinking of a permanent screen for this. Maybe I'm not understanding you D-mo. Not sure what type of tow vehicle or where I live has a bearing on my original question. I'm simply wondering if anyone has put some type of screen material on the venting that allows air in and out of the compartment where the cool cat heat pump resides to keep the wasps, etc. out. There is quite a bit of empty space around the cool cat where wasps could enter and build nests.
It looks like most folks have screened the water heater compartment, fridge compartment, etc. so wondered why not screen the cool cat AC compartment as well?
I was concerned that a standard mesh type screen material like on a patio screen door might restrict the air flow too much.
I do appreciate you attempts to help - just now not sure I'm communicating very effectively based on your answers.........
By the way I'm from Nebraska and drive a Tahoe for the tow vehicle.