black exhaust fan heavy duty industrial exhaust fan Kitchen exhaust fumes Bidirectional and Unidirectional switch

  ⭐【Dual Switch Free Selection Design】This kitchen exhaust fan comes with two optional switch modes to meet diverse ventilation demands. The bidirectional switch supports free bidirectional smoke exhaust switching, perfectly solving kitchen oil smoke accumulation. The unidirectional switch features simple opening operation for fast smoke discharge, allowing you to switch working modes freely according to actual scenarios. ⭐【Automatic Check Valve Plate】Equipped with upgraded automatic closing check valve plate, it opens and closes synchronously with fan operation to ensure unobstructed and efficient ventilation. Designed with rounded smooth edges, it optimizes the overall product aesthetics while avoiding scratch injuries and greatlyimproving daily use safety. ⭐【Low-Noise Comfortable Operation】Adopts optimized operating structure and blade design, the running noise is only equivalent to the second gear of a household electric fan. It realizes powerful ventilation while maintaining quiet operation, no harsh noise disturbance, creating a comfortable and quiet kitchen living environment. ⭐【Stylish & Safe Integrated Design】Features a premium all-black metal appearance with smooth and soft lines, presenting a generous and minimalist texture that fits various home decoration styles perfectly. Equipped with a professional safety net cover, it effectively prevents accidental contact with rotating blades andavoids personal injury during operation. 【Features】1. Dual bidirectional & unidirectional switch, free mode switching2. Automatic opening/closing check valve for efficient ventilation3. Low noise operation like electric fan second gear, super quiet4. Stylish black metal body, compatible with various decoration styles5. Built-in safety net cover to prevent accidental injury6. Simple installation & easy daily cleaning and maintenance 【️Specification】Product name: Kitchen Window Exhaust FanSwitch mode: Bidirectional switch / Unidirectional switch optionalCore design: Automatic check valve plate, safety net coverRunning noise: Equivalent to electric fan second gearMain scenario: Kitchen oil smoke exhaust & air circulationOptional sizes & parameters:10 Inch: 65W power, 2600m³/h airflow, 1500r/min rotating speed12 Inch: 75W power, 2700m³/h airflow, 1600r/min rotating speed 【Packing list】1 × Window Exhaust Fan 【How To Use】1. Confirm the installation position and fix the exhaust fan stably2. Complete simple wiring installation according to the instructions3. Select bidirectional or unidirectional switch mode as needed4. Turn on the fan to start kitchen smoke exhaust and ventilation5. The check valve plate opens and closes automatically with operation6. Wipe the fan surface regularly to remove dust and oil stains