Box Fan
$30
Estimated value as of 2026 · Walmart and Home Depot listings for standard 20-inch household box fans
A box fan is a portable, square-shaped electric fan typically 20 inches in size, used for cooling rooms by circulating air through windows or indoors.
Fun fact An average 20-inch box fan uses only about 75 watts per hour, costing roughly $6.50 per month to run 24/7, making it far cheaper than air conditioning.[7]
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