The rainproof Outdoor Filterfan are certified to TYPE 3R, providing electrical enclosures with protection against ingress of falling dirt, harmful effects of rain, sleet, snow and external ice formation. Also, it offers UV resistance plastic to prevent premature degradation from direct sunlight. Traditional outdoor solutions would require installation of a metal hood (rainhood) over the filter fan. The fluted filter-mat provides three-times longer service life, says the manufacturer, by holding more dust before airflow is impeded. 

Pfannenberg Inc.