July 31, 2021
To provide airflow to the closet, vestibule and machine room, I added some passive and active ventilation.
The passive vents allow air from a low height to pass through a vertical duct and leave near the ceiling in the closet.
There’s an identical setup on the other side for the machine room.
Each side also has active exhaust vents on the other end of the spaces, pulling air from up high and exhaust it down low.
This uses super quiet exhaust fans which can be run constantly, intermittently, or manually switched.