Replacement Cartridge for the Lifegard Aquatics AF-94 Triple Capacity Mechanical Filter Module. 20 micron. This Cartridges DOES NOT have removable pleats. It is NOT the cartridge that currently comes with the Lifegard Aquatics AF-94 Triple Capacity Mechanical Filter Module, but it’s just as efficient. The AF-94-29 now comes with three of the R175025X Cartridges. This is a single 29.25″ Cartridge. Lifegard part# R172010.