Tier1 Replacement for Pentek P20 30 Micron 10 x 2.5 Spun Wound Polypropylene Sediment Water Filter REPLACEMENT FIT: Fits most standard 10 x 2.5-inch housings. 10 inches (length) x 2-1/2 inches (outside diameter) HIGH QUALITY MATERIAL: Spun Wound Polypropylene HIGH QUALITY WATER: Designed to help ensure you serve only high quality water throughout your home. 100% TIER1 NO WORRIES GUARANTEE: We stand behind the quality of filtration and overall performance of our Tier1 filters! Particulates Sediment PENTEK-P25 W25P FPMB20-978 PX20-9-78 WP251193021 MB20-S SDC-25-1020 P20-10-WF SDF-25-1020 Sediment in drinking water on its own isnt particularly hearmful to humans or pets but it can be an indication of lead or iron contamination which can cause serious health issues. If you suspect there is lead in your pipes get your water tested. Sediment filters help protect other appliances and posessions from the harmful effets of particles which can cause staining and spots on clothes, sinks, toilets and more and wear and deterioration on pipes and appliances If other filtration mediums are already in place in your home, sediment filters as a first layer of defense can increase the lifetime of your other filters by reducing the number of particles and contaminants that would otherwise wear on those other filters.