EFFECTIVE INLINE DUCT FAN:Duct Size: 4 inch,Airflow:200 CFM, Powerful blower fan speed:2930 RPM,Power: 28 W,Noise Level <30 dB,Max Ambient Temp is 110? / 45?. 4 INCH CARBON FILTER:Dimensions: 4" Flange Ducting x 12" Length.1050+ RC 48 Australian Virgin Charcoal Bed.Classic designed silver style.Switchable filter flange.Free Pre-Filter included.Highly effective at absorbing odors and airborne organisms with physical and chemical adsorption. 4 INCH 8 FEET ALUMINUM DUCTING+ 2 Stainless Clamps:Made from high quality aluminum, temperature endurance range from 0 ~ 185°F. (-18? ~ 85?).Durable and environmentally-friendly. EASY INSTALLATION -Ideal 3 sets,inline fan,air ducting and carbon filter,Widely used in HVAC applications, bathroom venting, stove hood exhaust, dryer venting, kitchen cooking exhaust, grow room or greenhouse air circulation, etc. RURAL GROW GUARANTEE: If you HAD ANY QUESTIONS about the item or assembly parts quantity,please email us via AMAZON BUYER MESSAGE or email our CUSTOMER-SERVICE TEAM.We can guarantee that all the issues can be solved WITHIN 24 HOURS.We will provide you with satisfactory service.