Airflow Aventa 125B In-Line Mixed Flow Extractor Fan – 23W Energy-Saving, 61-78 l/s (220-280 m³/h) Flow Rate, 2-Speed, Compact Design (190x246x136 mm), Fits 125mm Duct, 3-Year Warranty

Airflow Aventa 125B In-Line Extractor Fan – 23W Energy-Saving Ventilation, 61-78 l/s (220-280 m³/h) Flow Rate, 2-Speed, IPX4 Rated, Compact Design (190x246x136 mm), Fits 125mm Duct, 3-Year Warranty

Blauberg UK 4 inch 100 mm Chrome Circular Ceiling Mounted Vent Grille Adjustable Round Ventilation Diffuser for Air Extract and Supply in Offices and Shops

Kair 90 Degree Elbow Bend 100mm - 4 inch Round Plastic Ducting Joint to Connect Round Duct Pipe or Flexible Hose