Here's how I vent from my garage to the outside. Probably not exactly what you're looking for but it may give you some ideas.
I crack the service door about an inch to provide makeup air, and put a propane heater by the door to heat the incoming air. During the more moderate temperatures of the year I just open the garage doors.
I crack the service door about an inch to provide makeup air, and put a propane heater by the door to heat the incoming air. During the more moderate temperatures of the year I just open the garage doors.