Primary Filters
Primary (pre) filters are used in most ventilation systems to give a basic level of air cleanliness. Used in conjunction with HEPA filters they can greatly extend the life (and so reduce cost) of those HEPA filters.
Spark arrestors, card cased filters, and bag filters, can all be supplied. Prefilter housings either integrated into a HEPA system or as a separate unit can also be supplied.
Data sheets: