Pall ultipleat replacement Filter media: pp melt blown, pleated glass fiber, pleated depth pp Length: 20"(508 mm), 40"(1016 mm), 60"(1524 mm) Outside diameter: 6 inch (152 mm) Filtration rating: 1m, 4.5m, 6m, 10m, 20m, 40m, 70m, 100m Support/drainage: polypropylene (pp) End cap material: glass fiber reinforced polypropylene (pp) Seal material: epdm, nbr Features: 1.Hongtek use outside pp plastic frame for longer service life, can bear higher pressure than original pall ultipleat filter use outer hard netting. 2.Beta rating can reach 5000 (99.98% efficiency) & highest flow rate 110 mâ³/h 3.Unique crescent shaped pleated geometry, combined with its large 152 mm /6in diameter, reduces the number of filters and size of housing required. 4.Absolute rated filter medium for reproducible performance. 5.Out-to-in filtration constriction of mass flow pleated cartridges ensure holding all impurities stay inside the filter