WATERPROOF COOLING FAN,For applications that require moisture and dust protection,also could be used for refresh air for your underground garage,Compouter Case,Cabinets,DIY cooling ,rv fridge or replacement of PSU &industrial Fan.HIGHER AIRFLOW/LOWER NOISE: Updated blade and motor designs allow this to put out 45.8 cubic feet per minute with a noise level of 38.5db.can satisfied with daily cooling but not too noisy.LONG LASTING: 12V Dual ball bearing fan give a long projected lifespan of up to 50,000 hrs--that's over 5 years. Backed by manufacturer with a 1 year warranty.STANDARD CONNECTOR: Standard 3 pin native connector allows for easy adaptability with many systems,such as CPU,Server,Communication Equiment. Contact us if you need to determine which is the positive, negative, or tachometer (speed sensor) wires.WIDELY USED:For humid and dust-exist harsh environment.Great for greenhouse, bathroom, toilet, projector, or outdoor stage lighting.