iPower 4 Inch 195 CFM Inline Fan Circulation Vent Blower, Air Carbon Filter, 8 Feet Ducting, Speed Controller, 1-Pair Rope Combo for Grow Tent Ventilation and Temperature Humidity Monitor, Low noise

Mini construction fan and rope hanger: Size: 4 inches; Voltage: 120V; Current: 0.45A; Frequency: 60Hz; Power: 28W; Air Velocity: 195 CFM; Speed: 2500 RPM. Noise Level: 30db. Free pair of 8-ft adjustable ratchet clip hanger rope: hold up to 150 lbs Air carbon filter: Air flow: 200 CFM; Dimensions: 4 inches flange ducting x 12 inches length. 1050 + IAV Australian RC412 activated carbon. 50mm carbon layer of thickness for higher absorption and Capability Variable speed controller: One control switch for 3 settings, OFF, HIGH, MED, LOW. To avoid the risk of burning out the fan motor, controller does not adjust below 50%. Free pre-filter included, we recommend replace the pre-filter every 6 months to protect your filter 4 inch ducting: Temperature endurance range: 0 ~ 185°F (-18℃ ~ 85℃); length: 8 feet (when fully extended). A pair of 4 inch stainless steel metal clips makes the installation firmer Package includes: 1 x 4 inches 195 CFM inline duct ventilation fan; 1