The Inline Duct Fan is ideal for remotely venting equipment room and closets, projector enclosures, built-in cabinetry, racks and more. The fan's very powerful and efficient motor delivers an impressive 160CFM that will handle most applications. The fan utilizes 4 inch flexible duct for intake and exhaust and comes pre-wired with a 120 volt power cord so powering the system is as simple as plugging it in .The heavy-duty steel housing has an attractive black powder coated finish for durability and features attached wall or ceiling mounting brackets for easy installation.