Does anyone have an idea for a good way to make a clean transition piece where refrigerant lines exit to the exterior. In brick, I have used a 3" closet flange and 3" PVC. But I need an idea for a Hardie siding (lap) situation. I guess I could use the same thing but this is for a small house and I think 3" would be too large. I'm thinking maybe separate exits for the two lines?