BETAM Inline Extractor Fan with Temperature And Humidity Controller,Bathroom Exhaust Fan,IPX4 Waterproof,220V Duct Fan,for Cooling,Booster,Grow Tents,Hydroponics Ventilation,4 inches

4''/100mm TDK250T In-Line Extractor Fan Kit c/w Timer

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