The cartridge dust collector uses a perforated metal cartridge with a cellulose filter pleated, non woven filter media, bound by steel caps at the top and bottom. The end caps were joined with the cellulose media and outer and inner cores by an adhesive. Cellulose media was used because it has pressure drop qualities similar to those of felted media in pulse jet collectors. Pleated media filter elements with narrow pleat spacing (8 pleats per inch) are efficient for filter cakes (formed with fine dusts) that are less than 0.02 inch thickness. Narrow pleat spacing loses its relevance when dust particle size is beyond 0.03 inch. The pleated design provides greater amount of filtering area while occupying lesser space. Consequently the air - filter media ratio, pressure drop and cartridge collector size reduce considerably. According to the customer request size