Check the listing for details. Pentek S1 Standard 10 x 2.5 Inch 20 Micron Pleated Sediment 155001-43. Condition: New. Listed at 14.99 USD. Pentek 155001-43, S1 Pleated Cellulose CartridgeThe Pentek S1 is a 2-1/2" x 9-3/4" cartridge that is meant for general water filtration purposes. These cartridges are economically priced and are highly effective at reducing sediment particles down to 20 microns. The Pentek S1 is recommended to be used only for chlorinated water supplies and should not in well water applications where there is no chemical injection system.Filter Media: Pleated celluloseFilter Life: 4 months or 16,000 gallons (whichever comes first)Application: City water onlyContaminant Reduction: Sediment (sand, dirt, silt, rust, and scale particles)Dimensions: 9-3/4" L x 2-5/8" DRating: 20 micronFlow Rate: 2.4 psi at 10 gpmTemperature Rating: 40°F to 145°FPart Number: 155001-43 / 15500143Model: S1