10 inch 5µ sediment 5 micron sediment filter for particulate 10 inch GAC granular activated carbon for chloramine, tastes, and odors 10 inch carbon block 5-10 micron carbon block filter for chlorine, tastes, and odors inline post filter polishing filter with 1/4 inch quick connect fittings for superior taste inline ph/mineral filter calcite filter for acid neutralization and addition of beneficial minerals with 1/4 inch quick connect fittings inline alkaline filter alkalinity filter raises ph creating alkaline water and providing beneficial minerals with 1/4 inch quick connect fittings standard size prefilters sediment, carbon, & GAC fit in standard 10 inch filter housings, approximate dimensions: 9.75"X2.5" this filter set is designed for the zoi pi pure system. The standard size filters work in most reverse osmosis systems available as well, and includes a 5 micron sediment filter, a GAC filter, a 5 micron carbon block filter, an inline ph filter, an inline alkaline filter, and an inline GAC taste & odor polishing filter. Reverse osmosis systems require regular filter changes to protect the membrane and ensure clean water. Filters should be replaced at least Once a year, every 6 months is average for most homes. **Does not include the ro membrane**