Panel and cartridge filters are made of from sheet fiber materials and these materials are applied to sealed cardboard or galvanized frame. Cartridge filters are used as elements of the pre filtration systems or basic filtration for ventilation and air conditioning systems. They can work as filters for the main ventilation systems in simple or as pre-filters extending the service life of higher efficiency filters. Forms of production are made according to customers' demands as well as system requirements. The main types; Glass fiber filters, sponge impregnated with activated carbon cartridge filters, granule activated carbon cartridge filters etc. The production is made in standard and specific sizes as well as during production as an alternative method performed through pleating creating a large filtration area the filtration performance and an increase in service life is provided .