20" Sediment water filter cartridge - particulate filter 5 micron
Pleated Sediment Filter 20 Micron 10 x 4.5 washable cartridge
Polypropylene Bag Filter for ACPBH420 Housings | 20" | 5 Micron
Membrane Solutions 5 Micron 2.5" OD x 20" Length String Wound Polypropylene Sediment Water Filter Cartridge for Whole House Filter Systems - 6 Pack : Amazon.co.uk: DIY & Tools