MARS HYDRO Inline Fan 4" 6" Cooling Ventilation Duct Blower for Grow Tent Kits
GROW TENT VENTILATION SYSTEM. 2025 IFRESH SERIES DUCT FAN SYSTEM. If you don't feel it's a good fit, we'll help you work through it. This will put the fan into pairing mode. Are you the Mars Hydro factory?.