Growsun 4 Inch Inline Fan Carbon Filter Combo With Fans Speed Controller and 25-Feet-Grow Ducting for Grow Tent Exhanst Kit 190 CFM,Pre-wired 5-feet power cord, 120v/60hz standard household plug. 4 by 16-Inch Carbon Filter,Thickness Of 1.5 Inches Activated Virgen Carbon, Removes 99.5% Of Volatiles From The Air One Control Switch for 3 Settings: Variable Speed, OFF, and Full Speed. 2 inch Width,30 Yards Long, Environmental Water Glue Sticks Well to Metal Dia 4 inch by Length 25 Feet Air Ducting with a Pair of Durable Clamps