Is a mechanical device designed to move air through ductwork, improving airflow and removing stale air, odours, humidity, or heat from enclosed spaces.
specification of 8" duct exhaust fan /air duct booster fan /ventilation fan
-size include:8" diameters
_airflow capacity (cfm)
_noise level
_duct size compatibility
_ motor type: ec (electronically commutated) motors offer energy efficiency and variable speed control.
_additional features: some models include built-in humidity sensors, timers, lighting, or bluetooth speakers.