VEVOR’s 12-inch Shutter Exhaust Fan a wall‑mounted AC unit for general ventilation. It uses a 45 W, 220 V/50 Hz motor rated at 1400 rpm and delivers 1084 CFM of airflow, approximately 1800 m³/h. The fan diameter is 305 mm (12 in), with a frame size about 380 × 380 × 190 mm and a net weight of 3.4 kg. Automatic gravity louvers close when the fan is off to limit back‑drafts and debris; a detachable steel mesh screen is supplied for additional protection. The housing and louvers are aluminum alloy with galvanized steel components. Suitable applications include garages, sheds, attics, workshops, and greenhouses where reliable extraction of heat, humidity, and odors is needed.