Axial fan: Rosenberg USA
Rosenberg USA released a new version of its ETRI 148V Series AC axial fan featuring an aluminum body that reduces weight by nearly 20% to less than 2 lbs. The company claims its new fans outperform competitive models in airflow by 9% and life expectancy by 33% to 50%.
The ETRI 148V Series includes six models offering airflow from 104 cfm to 252 cfm. Life expectancy is 80,000 hours at 104ºF. Operating temperatures cover a wide range, from 14?F to 158?F.
The fans are stackable and feature terminal connections. They are also available with flying leads. Ball bearings are standard. Sleeve bearings are optional. Speed sensor is also an option.
Maximum rated noise for the 148V Series is only 57 dBa. Standard models are offered in either 115 or 208-240 VAC, 50 or 60 Hz. They are approved to applicable UL, CSA, and CE safety standards and some versions are GAM T1 listed or can be reinforced for non-standard applications. They are also available for three-phase input power. Thermal protection is standard.