The ADDA AK178 and AK186 provide the same airflow performance but are built in different frame sizes to suit different applications. The AK178 measures 176 x 176 x 89mm while the AK186 is 180 x 180 x 65mm. Both are powered by a new high performance capacitor motor that is more efficient, producing a higher output while consuming less power than shaded pole motors that are often used for this type of fan.
Both fans produce airflow of 805 litres/sec (380 CFM) at a nominal speed of 2,650 rev/min and have an anticipated lifetime of 50,000 hours at 40ºC.