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Walmart has Holmes 6" Dual Blade Twin Window Fan (HAWF2021-WMUM) on sale for $15.05. Select free store pickup where stock permits, otherwise shipping is free on orders of $35 or more. Thanks
Amazon also has Holmes 6" Dual Blade Twin Window Fan (HAWF2021-WMUM) on sale for $15.05. Shipping is free with Prime or on orders of $25 or more.