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

All-In-One Combo: This inline fan combo enables your ventilation system set up in a grow tent, which is ideal for cooling down heat from lighting fixtures and controlling hot and humid conditions Powerful Inline Fan: Made of galvanized steel, the 4-inch inline fan runs at a speed of 2300 RPM and produces an air flow of 190 CFM, with a noise level of just 30 dB the maximum 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 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 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, Manufacturer: VIVOSUN