Reddit reviews VIVOHOME 4 Inch 203CFM Inline Duct Fan with Speed Controller Leather Sheath and Air Carbon Filter Odor Control Scrubber for HVAC Ventilation 2 Sets

VENTILATION FAN - Ideal solution for multi-purpose use in residential and commercial ventilation, transfer of hot/cool air, or circulatio; Synthetic leather sheath designed to lower operational noise, long lasting and resistant to moisture and rustPOWERFUL FAN - Maintain a healthy grow room by efficiently moving large volumes of air through your ventilation system; Variable speed controller with three speed switch (low, medium and high) for adjustment according to your requirementsEFFECTIVE CARBON FILTER - Air carbon filter is utilizing Australian raw carbon with stunning odor absorbency; Filters out cigarette smoke, plant based allergens, and mechanical residue, fumes, or any other foul smells at your house, workshop, business, etcBUILT TO LAST- Carbon filter is made with heavy-duty galvanized steel for maximum strength and age-resistance; Sized to meet all of your ventilation and air purification needs; Easy install with ventilation hosing, keeping you free from any unnecessary mess or hasslePACKAGE INCLUDE - 4 inch duct fan with speed controller and leather sheath * 1pc; 4 inch air carbon filter with with Australian raw charcoal * 1pc