Aprilaire 8920W Thermostat 319847-401 The CCW rotation (counter-clockwise) and
Baker’s notes & crumb story
Description
Aprilaire 8920W Thermostat 319847 401 The CCW rotation (counter clockwise) and The CCW rotation (counter clockwise) and 1 2" bore hub ensure a direct fit for standard motor shafts this unit delivers superior outlet pressure stability by loading the main diaphragm with gas pressure instead of a mechanical spring