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Coarse Filters

Used as primary filters for removal of particles between 10 to 20 microns with an efficiency of 85% to 95%. Primary filters retain coarse particles to avoid further loading on secondary filters. These filters are washable to obtain a longer useful life.

This is a G4 efficiency pre-filter, which is installed in commercial & industrial HVAC ventilation systems; the pleated foldable design can increase the filter area to provide a better filter performance. The aluminium frame is hard and makes the filter structure stable, rigid and free from corrosion.

Grades and Dimensions

Sl No	Filter Grade	Dimension	Airflow (CMH)	Initial Pressure Drop (Pa)	Final Pressure Drop (Pa)
1	G4	305x305x46	850	40	250
2	G4	610x305x46	1700	40	250
3	G4	610x610x46	3400	40	250
4	G4	498x498x46	2200	40	250