Amazon Filters are recognised as leaders in the field of meltblown depth filter cartridge technology. Our leading edge research has resulted in the manufacture of filters where the diameters of the blown fibres are controlled to produce different pore sizes throughout the production process. This enables the retention of contaminants throughout the depth of the media. All the layers are inter-linked to offer maximum support while ensuring that the high void volume is maintained. The fibre density is increased towards the inside of the media giving true progressive retention and therefore long filter life.