... cartridge : 1)Material:PP 2)Pore size(um):0.1, 0.22, 0. ... , 5.0, 10, 20 3)Dia(mm):68mm SPECIFICATIONS:PP Filter CartridgeMATERIAL: PP (Polypropylene) PORE SIZE: 0.1um, 0.2um, 0 ... upon request. FEATURES: 1. The membrane stack consists of PP super fine fiber membrane and imported deflector layer and possesses ... (65x42x28cm) 20inch: 15pcs/ctn (65x42x28cm) 30inch: 15pcs/ctn (89x42x28cm) PP Filter Cartridge