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 m³/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