The Pentek BP-420-100 filter bag is a 100 micron glazed polypropylene felt bag filter, Polypropylene bags are compatible with a broad range of corrosive fluids including organic solvents, oils, acids, alkalis and microorganisms, The Pentek BP-420-100 bag filter can withstand temperatures up to 200F (93, 3C), The Pentek BP-420-100 filter bags are manufactured from felt because of its high solids loading capabilities, in comparison to similar mesh fabrics, The Pentek BP-420-100 filter media is created by needle-punching two layers of synthetic fibers together in a supporting scrim, A glazed finish, created by melting the outermost surface fibers, is used to produce a bond that reduces the possibility of migration, The Pentek BP-420-100 filter bag"s thermally welded unique design results in consistent filtration efficiencies, Dimensions: 4"" W x 18"" L (102 mm x 457 mm), Filter Media: Glazed Polypropylene Felt, Maximum Flow Rate: 40 gpm, SKU: CWD2291