Check the listing for details. VIVOSUN AeroWave D4, 4” Grow Tent Clip Fan with Detachable Hook, Black. Color: Black, Condition: New. Listed at 16.14 USD. About this item3-Speed Strong & Quiet Airflow, Adjustable Airflow Angle for Hydroponics, Circulation & Cooling3-Speed Settings: With one-touch operation that cycles through three speed presets up to 3500 RPM, this compact fan offers tailored cooling customization; And with the integrated memory feature, your chosen fan speed is automatically retained if power gets disruptedAdjustable Airflow Angle: Simply loosen the front cover knob for free rotation, dispersing breezy circulation throughout the entire space; Or tighten the knob for a focused air channel to concentrated areas as needed; Seamless adjustments between wide-span and precision-point airflow satisfy your different needsFlexible Hook: A detachable and angle-adjustable hook on the back of this mini DC electric fan allows for secure attachment to poles and adjustable positioning; By changing the hook's angle, you can flexibly direct airflow in different directionsVersatile Mounting: This lightweight fan offers four mounting options for flexible placement; It can be positioned on flat surfaces, clamped to poles, suspended from ceilings, or magnetically secured to tent walls by positioning a separate iron plate (not included) on the corresponding exterior sideWhisper-Quiet Circulation: Operating at a maximum noise level of 35 dBA, this fan ensures a tranquil environment; Effortlessly install it in your grow tent to foster a zone of effective air circulation, maintaining the ideal temperature and humidity for your plants to flourishAbout this item3-Speed Strong & Quiet Airflow, Adjustable Airflow Angle for Hydroponics, Circulation & Cooling3-Speed Settings: With one-touch operation that cycles through three speed presets up to 3500 RPM, this compact fan offers tailored cooling customization; And with the integrated memory feature, your chosen fan speed is automatically retained if power gets disruptedAdjustable Airflow Angle: Simply loosen the front cover knob for free rotation, dispersing breezy circulation throughout the entire space; Or tighten the knob for a focused air channel to concentrated areas as needed; Seamless adjustments between wide-span and precision-point airflow satisfy your different needsFlexible Hook: A detachable and angle-adjustable hook on the back of this mini DC electric fan allows for secure attachment to poles and adjustable positioning; By changing the hook's angle, you can flexibly direct airflow in different directionsVersatile Mounting: This lightweight fan offers four mounting options for flexible placement; It can be positioned on flat surfaces, clamped to poles, suspended from ceilings, or magnetically secured to tent walls by positioning a separate iron plate (not included) on the corresponding exterior sideWhisper-Quiet Circulation: Operating at a maximum noise level of 35 dBA, this fan ensures a tranquil environment; Effortlessly install it in your grow tent to foster a zone of effective air circulation, maintaining the ideal temperature and humidity for your plants to flourish