Features: Brand new and high quality 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 place where a lot of air is needed. Made of plastic materials, exquisite workmanship, very good quality and long service life. Detachable design, convenient cleaning, suitable for pet house, carbon stove, moxibustion smoke exhaust and so on. Adjust the fan speed to suit your needs with the variable speed controller of the blower. Find the perfect airflow level for any application or noise environment. Specifications: Material:Plastic Type:20mm/25mm Package Includes: 1 Set Exhaust Fan note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.