DEWENWILS 120V AC Quiet Muffin Fan, 80mm25mm Waterproof Case Fan Cooling Fan with Speed Control, UL-Certified for DIY Cooling Exhaust Ventilation, Flame-Resistant, 2 Pack

[Robust & Flame-Resistant] Built with a die-cast aluminum shell, this exhaust fan features impeller blades crafted from thermoplastic with high flame resistance; it can be used in wet environments ( note: avoid getting the speed controller and plug wet) ^^ [Adjustable Fan Speed] With a 3-in-1 socket, 1 fan controller can simultaneously control the wind speed of up to 3 fans, and freely adjust the ventilation fan speed from 40% to 100%, optimizing the airflow and noise of exhaust fans ^^ [High Performance] UL-certified fan with dual ball bearings, offering up to 50, 000 hours of lifespan; this cooling fan provides 21CFM high airflow for effective air circulation and cooling (can be used flat or upright) ^^ [Versatile Application] Perfect for projects requiring cooling, ventilation, or as a replacement 120mm fan for various products; suitable for growing room, chicken coop, garage, bathroom, basement, etc., quickly dispel odor and moisture, maintain air circulation ^^ [5FT Cord for Flexible Use] Unlike other fans, our exhaust fan 120mm comes with a 5ft speed controller cord, allowing you to adjust the fan to the optimal ventilation spot without being limited by cord length; perfectly adaptable to various home layouts