... . replacement part number: E1-12,E3-12,E5-12,E7-12,E9-12;E1-16,E3-16 ... ,E3-20,E5-20,E7-20,E9-20;E1-24,E3-24,E5-24,E7-24,E9-24 E1-28,E3-28,E5-28,E7- ... 28,E9-28;E1-32,E3-32,E5-32 ... ,E7-44,E9-44;E1-48,E3-48,E5-48,E7-48,E9-48 filtration rating(μm ... grade(hyper efficient filter for eliminating oil):0.01 E5 grade(high efficient filter element for eiminting oil):0 ...