fresh and tremendous OOTDTY Features: Strong power, double ball bearings, longer life. The fan casing is made from galvanized metal and the impeller is fabricated from stainless steel. The motor is provided with slide bearings. Both soft and step velocity management is played with the thyristor or autotransformer controller. Several followers could be to at the least one controller in for case the complete strength and operating current don't the rated controller values. Combined transport and extract ventilation methods for various premises the place excessive at comparatively low method resistance is required. Inline duct fans assist filter air pollution resembling exhaust, fumes and odors. simpler and also create a cleaner environment for your plants. Multi-use fan is great for indoor growing, grow tents, greenhouses, indoor gardens, or anywhere you need assist an air ventilation system. Specification: Power: 25W Frequency: 50Hz Rotating speed: 2600r/min Material: Iron Dimensions: 9/3 Color: White silver Quantity: 1 Pc Note: 1 allow 0-1cm error because of instruction manual measurement. pls make sure you do not mind before you bid. 2 to the difference between varied monitors, the image may not mirror the particular coloration of the item. Thank you! Package Includes: 1 Duct Air Ventilator