Master Flow® Whole House Fan 24"‑ Direct Drive Specs

      Master Flow® Whole House Fan 24"‑ Direct Drive Docs

      Master Flow® Whole House Fan 24"‑ Direct Drive Videos

      Pull cool, fresh air into your home and force hot, moist air out to help save on cooling costs. Includes 24” aluminum shutter and 2-speed pull-chain switch.

      Great Air Exchange
      Large 4,500 CFM airflow is perfect for homes up to 2,500 sq. ft. for great results
      2-speed pull-chain switch controls operation (no wiring through walls required)
      Efficient and Long Lasting
       1/4 hp permanent split capacitor design for added power and long life

      FAQs for Master Flow® Whole House Fans


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      Warranty Questions   Technical Questions


      See Master Flow® Powered Ventilation Products Limited Warranty for complete coverage and restrictions.
      Visit the Attic Ventilation Calculator for details.

      Note: Always have a balanced ventilation system. In no case should the amount of exhaust ventilation exceed the amount of intake ventilation.

      Where to buy

      Find a GAF distributor near you.

      Find a contractor

      Find a GAF certified contractor near you.