The GAF Master Flow automatic 20 in. Power Gable Vent Shutter is designed to be used with GAF Master Flow EGV/PG series electric gable fans. The shutter will open when the electric gable vent is operating. Constructed of white aluminum, that can be painted.
- Use with all attic power gable mount vents
- Moving air opens the louvers only when the power vent is operating
- When vent is off, shutter helps prevent infiltration of rain, snow, insects, etc.
- Maintenance-free white aluminum construction (Can be painted)



















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