There are two types of filters inside the filter box: a pre-filter and a real filter.
1) PRE-FILTER TO PROTECT THE EPA FILTER
This type of filter is characterised by a corrugated synthetic fibre cell.
The greater filtering surface, compared to flat cells, allows greater dust holding capacity and therefore greater service life. Frame in galvanised steel, electro-galvanised steel wire mesh protections.
The openable frame enables the separation of the synthetic media from the metallic parts.
The filter media has progressive density synthetic fibre. It is used for the filtration of airborne solid particles in civil and industrial air conditioning systems. In our case it is used for the pre-filtration of fine dust filters.
2) MULTI-V ABSOLUTE FILTER EPA
The multi-V absolute filter is composed by a galvanised steel frame equipped with side handles, polyurethane sealant and one piece endless gasket.
The filtering media is made by water repellent glass fibre paper folded with constantly calibrating spacing.
Those filters are used for airborne solid particles filtration in the air conditioning systems for air contamination controlled environments.