Check the listing for details. Geekpur 20" Whole House Carbon Block Replacemen Water Filter 20" x 4.5"-5 Mic. Color: White, Condition: New. Listed at 31.99 USD. FOOD GRADE MATERIAL FOOD GRADE MATERIAL-Made of 100% high quality coconut carbon . Carbon block filter is used to remove chlorine, taste & odors, very fine particulates. life time:6-12 months ,these can be used for residential and commercial applications. Standard Size Fits all standard 20" sized blue filter, size at 4.5" diameter x 20" height. How It Works? Please refer above photo. Features: FOOD GRADE MATERIAL-Made of 100% high quality coconut carbon. STANDARD-Fits all standard 20" sized filter housing, size at 4.5" diameter x 20" height. Function-Carbon block filter is used to remove Remove chlorine, taste & odors, very fine particulates. life time:6-12months ,these can be used for residential and commercial applications. GOOD PACKING-All Filters are individually wrapped&sealed and extend shelf life. RESPONSABLE MANUFACTURER- ISO9001:2008 certificated Manufacturer ,also Member of Water Quality Association (WQA). Specification: FEED WATER PRESSURE: 40 - 100 PSI, TEMPERATE:40-110°F/5-45°C, PH:3.0 -11.0, MAX TDS :1000 PPM, TURBIDITY < 1.0 NTU, MAX SDI