INLINE EXHAUST FAN - Inline fan provides an excellent way to quietly ventilate by locating the power unit in a remote location from the living area. The AIF series inline fans provide the driving power of the system, giving it life. Designed for long life and dependable performance, utilizing an external rotor motorized impeller gives you the knowledge that the fan will provide years of worry free ventilation. Air king provides solutions for any residential setting including Energy Star qualified options. Constructed of UL recognized and UV protected thermoplastic resin and is prewired for quick and easy installation. Prewired for simple and quick installation and are ideal for multiple point exaust instead of a single fan for each installation point.