Mars Hydro 4 inch Inline Duct Fan with Thermostat Controller

4 Inch Inline Duct Fan with Variable thermostat controller for easy fan speed management. Durable plastic fan housing and blades for low noise(28 dB). Powerful Motor is super energy-efficient.

Excellent purification inner core Made of imported Virgin Australian activated charcoal, delivering 100% filtered airflow, eliminate some of the most undesirable odors, pungent smell, and particulates from indoor grow tent or hydroponics grow room.

Effective & Quiet Ventilation Kit: 4″ Inline duct Fan is rated for max 205CFM, excellent odor elimination. With fan thermostat controller, noise min to 28dB. Filter with built-in Australian virgin charcoal granules which absorb exponentially more contaminants and allergens than traditional carbon.

Perfect Growth Partner: Fast assembly, work as a cost-effective, convenient ventilation combo.