Fantech’s prioAIR 6 EC is a 6-inch inline duct fan with an electronically commutated motor for high efficiency and smooth, variable speed control via a 0–10 V signal or optional EC-10V potentiometer. It’s built with a leak‑free composite housing and includes a mounting bracket for flexible installation in residential or light commercial duct runs. Maximum free‑air airflow is 443 CFM (approximately 753 m³/h); at 0.25 in. w.g. it delivers about 408 CFM. The fan operates on 120 V and is rated for airstream temperatures up to 131 °F. prioAIR EC models carry AMCA certified sound and air performance ratings and are commonly used to boost long duct runs or transfer conditioned air between rooms while keeping noise low.