Master Flow® Whole House Fans
Master Flow® Whole House Fans are smart energy savers for any climate
where air conditioning costs are a concern. They allow you to beat the heat by forcing
hot air out of your home while bringing in cooler outside air. Master Flow®
Whole House Fans are an important part of a complete home ventilating system! (Designed
for homes over 1,000 square feet.)
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Master Flow® Belt Drive Deluxe Whole House Fans
30BWHFS
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Superior Air Exchange (versus standard models)...
For maximum impact on cooling costs
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Quieter Operation...
Belt drive isolates motor noise and vibration
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Efficient, Longest-Lasting Motor...
1/3 hp permanent split capacitor design for added power and longer life
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Better Appearance...
Includes super-quiet automatic white ceiling shutters
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Convenient Operation...
Includes two-speed wall switch (rather than pull chain)
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Safe...
U.L./U.L. Canada listed
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Master Flow® Direct Drive Standard Whole House
Fans
WHFS24M
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Efficient, Long-Lasting Motor...
1/4 hp permanent split capacitor design
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Easier To Wire...
2-speed pull chain switch controls operation (no wiring through walls required)
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Better Appearance...
Includes super-quiet automatic white ceiling shutters
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Safe...
U.L./U.L. Canada listed
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Master Flow® Tandem Whole House Fan
WHFTAN1
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Easy Installation...
Easily installed on all standard joist centers, no joist cutting needed
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Simple to Operate...
2-speed operation with remote control
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Great Looking...
Virtually invisible in the ceiling
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Safe...
Tested and approved by ETL for US and Canada
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Accessories/Replacement Parts For Whole House Fans
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Part
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Description
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S24
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24" white shutter (Fits WHFS24M)
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S30
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30" white shutter (Fits 30BWHFS)
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BWS2
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Two-speed fan control switch with cover plate (included with all
belt drive models)
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WHT36
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12-hour timer
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Drive Type
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Model No.
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Size
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HP
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CFM
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For Homes Up To:
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Recommended Exhaust Vent. (Net Free Area in Sq. In.)
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Ltd. Warranty Term/ Labor Protection Plus Plan†
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Belt
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30BWHFS
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30"
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1/3
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6000
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3000 sq. ft.
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1152
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10 yrs./5 yrs.
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Direct
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WHFS24M
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24"
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1/4
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4500
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2500 sq. ft.
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1008
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10 yrs./5 yrs.
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Tandem*
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WHFTAN1
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16" x 24"
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1/15
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1600
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2500 sq. ft.
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800
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5 yrs./2 yrs.
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†See ltd. warranty for complete coverage and restrictions
*Requires a minimum of 500 sq. ft. of attic space to operate
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