Usage Tips:Features:brand and Our extractor fan is supplied with a 2inch diameter, 14700rpm,6W or 15800rpm,18W(optional).Help you maintain a healthy grow room by quietly and efficiently moving large volumes of air throughout your ventilation system; solution for multi-purpose use in residential and commercial ventilation.Quiet and Energy Exhaust Blower: This embedded fan to run more quietly and reach low speeds without generating noise or heat. Widely used in homes, offices, warehouses, restaurants, bars, shops, shopping malls, grow tents, greenhouses and other places where a lot of air is needed.12V blower fan, widely used for picnics stove, camping, charcoals starter,replacement repair.Cooking Helper,It offer much convenience to make a fire for charcoal Outdoor Grills, BBQ, campfire, great for outdoor barbecue and picnics50mm 2inch Pipe Exhaust Fan for greenhouses, pet houses, tree houses and more.Specifications:US plug adapter input: AC100-240V 50/60Hzoutput: DC3V-12V 2AMain Material: PVCPower: 6W,18W(optional)Cable Length: Approx. 160cmAir Duct Diameter: 5cmBearing: ball-bearingSpeed: 6W 14700rpm,18W 15800rpmPackage Includes:1x 12V Exhaust fan1x US plug adapterNote:Please allow 0-1cm error due to manual measurement. make sure you do not mind before you order.Due to the difference between different monitors, the picture may not reflect the actual color of the item.