5 Layered Filters with Pre-Filter Layered Filters, 100/pk Description Diameter (mm) Pore Size (µm) Certification Housing Part No. Glass microfiber/ PTFE 15 0.2 LC Polypropylene 5190-5126 15 0.45 LC Polypropylene 5190-5127 25 0.2 LC Polypropylene 5190-5128