Airflow QT100MST Extractor Fan 25 L/s Flow - Motion Sensor & Overrun Timer - 100mm/4 Duct – German Made, 2-Speed Operation Upto 25 l/s, Quiet 25 dB, Energy Efficient 5/9W, 3-Year Warranty

4''/100mm TDK160T In-Line Extractor Fan Kit c/w Timer

TerraBloom 4 Inch (100 mm) Inline Fan - 188 CFM Exhaust Duct Fan, Built-In Speed Controller, ETL Listed, Pre-Wired 6 FT Grounded Cord - For Use In Grow Tents With Carbon Filters, Fixtures, Attics