Jonell LiquiPleat P Series Polypropylene Synthetic Filter Cartridge, 0.2 Micron, 10" Length x 2.5" OD. The Jonell Liqui-Pleat P series filter cartridges have a range of efficiency, outside to inside flow direction and are specifically designed for the removal of solid contaminants in critical applications. Length: 10 Inches, 2.5 Inch Outside Diameter, 1.06" Inside Diameter.