ApplicationSuitable for small box space ventilation, pc cooling,cpu cooler, greenhouse air exchange. Such as cooling fan for electronics storage cabinet, small camper, helmet, modem, router, refrigerator, projector, amplifier, receiver or any other application where need exhaust fan. Energy savingEC fan motors achieve as much as 30% more energy efficiency than AC fan motors. EC fan small size and space saving, strong plastic material, light weight and easy to install. On / Off SwitchFans are particularly useful in situations where they are placed high or in inconvenient locations, eliminating the hassle of constantly plugging and unplugging the unit. An on/off switch for the fan provides additional convenience and ease of use. Dual Ball BearingLong-term work. Long life-50,000 Hours. computer fan with 4.9 feet AC plug.One-year quality assurance. Please contact us If the product has any quality problems, it will be refunded within