G3 G4 Panel Pleated Air Filter consist of a dry non-woven fabric media which is pleated to give an extended surface area, producing a low initial resistance for the same air volume, making this an energy efficient filter. The pleat is supported by an expanded galvanised steel mesh

Typically G3 G4 Pleated Panel Air Filters are used as pre-filters on supply air systems to High Performance Bag Filters, or to protect heating or cooling coils from dust build up which leads to system inefficiency. Another common place to see a G4 Pleated Panel Air Filter is to protect fans in extract systems for office blocks or kitchen extract systems.