iPower 4 Inch 118 CFM Inline Fan HVAC Exhaust Blower, 8 Feet Non-Insulated Flex Aluminum Ducting, Variable Speed Controller and Humidity Monitor Combo, Quiet for Grow Tent Ventilation

Key features

• Upgraded fan: Diameter: 4 inch; air flow: 118 CFM; speed: 2450 RPM; wattage: 28W; voltage:110V; standard household plug, pre-wired 5.9 feet power cord, max ambient temperature: 104℉/ 40℃. Durable ceramic-coated can resist atmospheric corrosion from humidity
• Ducting: Material: aluminum foil + PET; size: 4 inch (diameter) x 8 feet (length) when fully extended. Temperature endurance range from 0 ~ 185°F. (-18℃ ~ 85℃). 1 pair of 4 inch metal clamps made from stainless steel
• Humidity monitor: Fast response that measures every 10 seconds, wide measuring range that measures temperature from 14℉ to 122℉（-10℃~50℃). Humidity sensor measures humidity from 10% to 99%
• Variable Speed Controller: One control switch for 3 settings: variable speed, OFF, HIGH, MED, LOW. To avoid the risk of burning out the fan motor, controller does not adjust below 50%
• Package includes: 1 x 4 inch 118 CFM inline duct ventilation fan; 1 x 4 inch 8 feet ducting with 2 clamps; 1X speed controller; 1 pack of humidity monitor. This combo removes heat and eliminate the undesirable ill-smelling odors for air delivery problems