AC Infinity CLOUDLINE A4 4-Inch Inline Duct Fan

The CLOUDLINE A4 is the entry-level model in AC Infinity's inline duct fan line, moving air through 4-inch flexible or rigid ducting to exhaust a closet, cabinet, or equipment room. A dial-style speed controller sets one of several fixed speeds, and the mixed-flow impeller design holds airflow even against duct resistance rather than stalling out the way a simple axial fan does.

Its dual ball bearings are rated for 67,000 hours of service, and the housing runs on a standard 100-240V AC supply. It is a straightforward, lower-cost option for anyone who wants a duct-mounted exhaust fan without the temperature or humidity automation of the S or T models.

Duct Size	4 in.
Airflow	165 CFM
Noise Level	29 dBA
Static Pressure	324 Pa
Power	35 W max, 18 W average, 100 - 240V AC
Bearings	Dual Ball, 67,000-hour L10 life
Cord Length	72 in. (6 ft) to controller and to plug
Dimensions	7.48 x 11.89 x 6.93 in.