Hydronix SDC-25-2005/4 SDC-25-2005 4 Pack Sediment Filters 2.5 x 20, 2.5" x 20", White 5 Micron, 60-120 PSI, NSF 42 Certified. 20" x 2.5" Size Fits all 20" x 2.5" multistage or single stage filtration system housings 20" whole home sediment filters Food Grade for the Food and Beverage Industry Oil and Gas, Fine Chemicals, Electronics, Metal Finishing, Pulp and Paper, etc.