Check the listing for details. RO/DI Psarion Phi Reef Filter Kit (replaces RODIFK). Condition: New. Listed at 73.48 USD. Replaces rodifk identical product, updated part number 10 inch 1µ sediment 1 micron sediment filter for particulates 10 inch carbon block 1 micron carbon block filter for chlorine, tastes, and odors 10 inch di de-ionizing filter removes 99% of contaminates inline post filter polishing filter with 1/4 inch quick connect fittings for superior taste standard size prefilters sediment, carbon, & di fit in standard 10 inch filter housings, approximate dimensions: 9.75"X2.5" replacement filter set for psarion phi reef systems. Standard filter size fits common 10 inch housings. Filters should be replaced at least Once a year, every 6 month is average for most homes. Does not include the ro membraneRO/DI Psarion Phi Reef Filter Kit (replaces RODIFK)Filter Replacement Kit for Aquarium Filter SystemsDoes Not Include RO Membrane