Model # SGM20
Store SKU # 1000405511
Master Flow SGM 20 Automatic Shutter opens only when the power vent is operating moving the air. When the power vent is off, the closed shutter helpst prevent infiltration of rain, snow, insects, etc.
- Maintenance-free white aluminum construction. Can be painted, if desired.
- Moving air opens the louvers only whenthe power vent is operating.
- Use with all attic power gable mount vents
- Manufactured in U.S.A.
- Always have a balanced ventilation system. In no case should the amount of exhaust ventilation exceed the amount of intake ventilation.