Check the listing for details. FiltersFast FF10SW-30 Replacement for Pentek CW-MF. Condition: New. Listed at 4.95 USD. Filters Fast Brand 10" 30 Micron Sediment String Wound Water Filter For CW-MF W30W The FF10SW-30 is compatible to Pentek CW-MF compatible replacement whole house water filter takes extra fine sand, dirt, silt, rust, and scale particles out of your water to improve the flow of water and performance of appliances. String wounds filters are not very common in the marketplace but they do offer excellent tolerance to a wide range of temperatures and minimal pressure drops near the end of their service life. The FF10SW-30 is an economical alternative to the American Plumber W5W (5 micron) water filter and is effective as a prefilter in well water applications. The Filtersfast FF10SW-30 specifications:Part Number: FF10SW-30Micron Rating: 30Reduces sand, rust, sediment, silt, dirt, and scale particles Dimensions: 2-3/8"x9-7/8" Capacity: 12,000 gallons (depending on water quality and usage)