Direct Drive Standard Whole House Fan
Master Flow®

Direct Drive Standard Whole House Fan - WHFS24M

24" Direct Drive Standard Whole House Fan for homes up to 2500 sq.ft.
Direct Drive Standard Whole House Fan - WHFS24M

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


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.

Note: Always have a balanced ventilation system. In no case should the amount of exhaust ventilation exceed the amount of intake ventilation. Visit the Attic Ventilation Calculator for details.

Protect Your Investment

Find out about product warranties and options that may help protect your most valuable assets. 

  • 10 yr. Ltd Warranty with 5 yr. Labor Protection Plus

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