Advanced 200-Gallon Faucet-Mount Water Filtration System From Culligan,, 25. Product Details Product Description Each filter cartridge needs replacement every 200 gallons or 2 months, although cartridge life can vary depending on your water usage and conditions. Annual costs are considerably higher than what you pay for most other faucet mounted units. How to replace the filter? Don?t worry, it?s not difficult at all ? at least in theory (more on this in a bit): Simply unscrew the cap from underneath the housing. The cartridge will drop down into your hand. Dispose of the old cartridge Insert a new one. Turn 2 and a half full turns until it stops. Open the faucet and check for leaks. Tighten cap if need be. Flush the new cartridge for at least 10 minutes to remove all carbon fines. From the Manufacturer Put the on-tap convenience of the Culligan FM-25 Polished Chrome faucet mount filter to work for you. This unit is ideal for individuals seeking a solution to the #1 water quality issue as identified by consumers - that of bad tastes and odors in their water. This filter goes even further in protecting against additional water issues that are of concern. The FM-25 provides Level 3 ? Advanced Filtration for the reduction of bad taste odor, aesthetic chlorine taste odor, sediment, lead, cysts such as giardia and cryptosporidium, turbidity, atrazine, lindane, and particulate class I. The filter cartridge has a life of up to 200 gallons or 2 months. Adaptors included fit most aerator faucets. Please see install guide for detailed explanation. For cold water use only Provide your family with visibly clean, great-tasting water for drinking, cooking and more FEATURES: Reduces atrazine, chlorine, lindane, lead, particulates class I, turbidity and bad taste/odor; Carbon block filtration method; Flow rate of 0.5 gpm at 60 psi; 30-100 psi pressure range; 40-100F temp range; Easy installation with no tools COMPATIBILITY: Includes adapters for all standard sink nozzles (does NOT fit drop-down faucets) FILTER LIFE: Up to 2 months or 200 gallons, depending on usage and water conditions CERTIFICATION: Tested and certified by IAPMO against ANSI Standard 42 and 53 Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.