Polypropylene String Water Filter, 5 Micron Pre-filter 2-3/4" x 9-3/4"
Amazon.com: 5 Micron 10" x 2.5" String Wound Sediment Water Filter Cartridge for Well filter Universal Replacement for Any 10 inch RO Unit, WP-5, Aqua-Pure AP110, CFS110, Culligan P5, WFPFC4002, WP-5, CW-MF,4PACK :
filter cartridge system 5 micron|Big Blue Filter 5 Micron 10 GPM 1" NPT
Pentek P5-20 | 5 Micron | 20 Inch Standard | Pentair Water Sediment Filter Cartridge | WaterAnywhere
20 Inch Big Blue 5 Micron Sediment Whole House Water Filter | Ronaqua