• Fan/Filter/Duct Size: 4 Inch
• Airflow: 205CFM
• Noise: 28dB-A
• Controller Type: Speed Controller

With a 4'' inline fan rated for 205CFM, an activated carbon filter with Australian charcoal, and a knob controller applied to allow easy switching and adjustment of the fan speed, the Mars Hydro 4 inch inline duct fan and carbon filter combo offers you everything you need to set up the ventilation in a grow tent. A good ventilation setup for grow tents measuring up to 3x3 feet.

• Fan/Duct/Filter Size: 4 Inch
• Airflow: 205CFM
• Noise: 26.8dB-A
• Controller Type: Digital Thermostat Controller

Featuring a 4 inch inline duct fan rated for 205CFM and a carbon filter with Virgin Australian activated charcoal, controlled by a digital touch-screen thermostat controller, the Mars Hydro 4'' inline duct fan and charcoal filter combo ventilation system provides you with everything you need to manage the temperature, the air circulation and the odors in your grow space.