My wife and I are in the throws of a remodel. I have two bathrooms that are side by side in to each which I'll be installing a heater/vent combo.
To avoid punching more than one hole in my roof to allow venting, can I have them vent through a single outlet? If so, what do I physically need in the way of ducting etc. a "Y" or a "T". How do I keep the exhaust from one bath going into the other?
Each of the units in question vents through a 4" opening.