Tier1 Replacement for Pentek & American Plumber CP5-BBS-D, CP5-BB, W5CPHD, 5 Micron 10 x 4.5 Pleated Polyester Sediment Water Filter 4 Pack QUICK & EASY INSTALLATION: Fits most housings that accept standard 10-inch x 4.5-inch water filter cartridges 3 MONTH FILTER LIFE: By replacing your water filter every 3 months, depending on your water quality, you keep your water tasting great. HIGH QUALITY FILTRATION: This filter reduces dirt, sediment, sand, silt, rust and corrosion, and other particles. REPLACEMENT PART FOR MANY PART NUMBERS & MODELS: This filter is universal to many 5 Micron 10 x 4.5 pleated polyester sediment water filters 100% TIER1 NO WORRIES GUARANTEE: We stand behind the quality of filtration and overall performance of our Tier1 filters! Coarse Sand Dirt Fine Sand Hard Scale Oxidized Iron Particles Sand Sediment Silt 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.