6/8/10/12 "exhaust fan reversal straight tube fan 7 blade all iron Two directions exhaust fan

DIYMO. Name: Stainless steel Exhaust fanSpecifications: 6inch/7inch/8inch/10inch/12 inchCondition: 100 Brand New Power: 40W/50W/100W/120WVoltage: 220VRated Rotation Speed: 2800r/minAir volume: 7in about 980m/h(Other size reference pictures)Drilling Hole Diameter: 7in about 180-195mm/7.1-7.6in Other size reference pictures)Operating Noise: 59dbSize: 7in about 222215.5cm/8.678.676.11in Other size reference pictures)Weight: About1.8kg. Specifications: 6inch/7inch/8inch/10inch/12 inch. Condition: 100 Brand New. Power: 40W/50W/100W/120W Voltage: 220V. Rated Rotation Speed: 2800r/min. Air volume: 7in about 980m³/h(Other size reference pictures). Drilling Hole Diameter: 7in about 180-195mm/7.1-7.6in Other size reference pictures). Operating Noise: 59db Weight: About1.8kg. Size: 7in about 222215.5cm/8.678.676.11in Other size reference pictures). Features: 1 High air ventilation efficiency and low noise while operating. 2 Effective and extremely quiet ventilation clears humidity and odo