Master Flow® Automatic Shutter ‑ SGM20 Specs

      Master Flow® Automatic Shutter ‑ SGM20 Docs

      Master Flow® Automatic Shutter ‑ SGM20 Videos

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      Compatibility

      For Master Flow® and most popular brand gable mount power attic vents
      Automatic icon

      AUTOMATIC

      Moving air opens the louvers only when the power vent is operating
      Protection icon

      PROTECTION

      When vent is off, shutter helps prevent infiltration of rain, snow, insects, etc
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