10" 5µ Sediment 5 micron sediment filter for particulate 10" GAC Granular activated carbon for chloramine, tastes, and odors 10" Carbon Block 5-10 micron carbon block filter for chlorine, tastes, and odors Inline Post Filter Polishing filter with 1/4" quick connect fittings for superior taste Inline pH/mineral Filter Calcite filter for acid neutralization and addition of benificial minerals with 1/4" quick connect fittings Inline Alkaline Filter Alkalinity filter raises pH creating alkaline water and providing benificial minerals with 1/4" quick connect fittings UV Bulb Replacement bulb for Intelifil 1 GPM 6 watt UV filter, which begins to decrease in intensity after 1 year Standard Size Prefilters Sediment, carbon, & GAC fit in standard 10" 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, an inline GAC taste & odor polishing filter, and a replacement bulb for the Intelifil 1 GPM 6 watt UV 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**