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Dual-blade operation
Two speed-settings and manual-reverse air flow control
Water-resistant motors are safe to use during rainy weather
Designed to fit most double-hung and slider windows
Adjustable extender screen and extender panel help secure fan in larger windows
The Holmes 6 Inch Twin Window Fan helps to maintain your comfort level with two speed-settings. Manually reverse your fan to intake fresh air and exhaust stale air. It is designed to fit most double-hung and slider windows and includes an adjustable extender screen and extender panel.