Membrane Solutions 20 Micron Pleated Filter Cartridge Big Blue 10"x4.5"- 4 Pack : Amazon.co.uk: DIY & Tools
SPECTRUM SPE-20-93/4 Pleat² Series Pleated Cartridge 20 micron 9 3/4"
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