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Manufactured from 19-gauge galvanized steel frame 2" deep with 1" flange. For quiet operation aluminum blades have felted edges. Pre-punched conduit hole knock-out. Class 1.

  • Outside Flange opening: 12" x 12"
  • Recommended roof opening: 12-1/2" x 12-1/2"
  • Blades open when ventilator comes on, close when airflow stops
  • Galvanized 19-gauge, 2" deep steel frame with 1" flange
  • Aluminum blades have felted edges for quiet operation
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Galvanized Steel


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