The Aqua-Pure™ AP110-2 is the 20 inch version of the Aqua-Pure AP110. The multi-stage filter construction maximizes dirt-holding capacity, while the ridged design maximizes surface area, increasing overall filter life. As a disposable filter cartridge, your water filtration system maintenance is simplified. The AP110-2 filter works with the following 3M™ AP1 Series Whole House Filtration Housings: AP102T and SST2HB as well as the discontinued AP12T and AP2610SS. Product Benefits: Technology provides fine sediment filtration down to 5 micron Grooved cartridge increases surface area for longer cartridge life, by 132% over non-grooved and 47% over the previous design Rigid construction helps to eliminate sediment “unloading” due to variances in water pressure