VIVOSUN 4 Inch 190 CFM Inline Fan with Speed Controller, 4 Inch Carbon Filter and 8 Feet of Ducting, Temperature Humidity Monitor for Grow Tent Ventilation

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  • Premium Carbon Filter Interior and exterior mesh construction provides 54% open area for free air flow; It is filled with 1200+ RC 412 Virgin Australian activated charcoal captures air contaminants effectively
  • 2 Rust-free Clamps The kit includes a pair of clamps that are made of stainless steel, which are used for securing the connection between ducting and inline fan to keep the connected components in place
  • Multi-Layer Air Ducting It comes with 3-layer construction--inner and outer layers are made of heavy-duty aluminum foil that is fire-retardant and its middle layer adopts PET thermoplastic

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