Apollo Horticulture AH IF4+CF4 4" 190 CFM Inline Fan with 4" Carbon Filter 4" Inline Fan with Built-In Speed Controller & 4" Carbon Filter Air Movement: 190 CFM, Noise Rating: 69 +/- 1.5 db. Power: 68 W at 0.56 A, Fan Speed: 2730 RPM Carbon Filter Air Movement: 200 CFM / Dimensions: 8" x 13.75" with 4" Flange Ducting Package Includes: Inline Fan, Mounting Bracket, Carbon Filter, Instructional Pamphlet