ErtelAlsop filter bags are ideal for almost any process filtration application requiring the removal of solids. Our filter bags are constructed using 100% synthetic Polypropylene fibers. Features & Benefits Micron ratings from 5 - 50 High flow/low pressure drop Heavy-duty fabric handles on all bags Standard filter bags fit most major competitive housings Continuous temperature of 225F High dirt holding capacity Ability to remove both solid and gelatinous particles Polypropylene materials meet FDA regulations for food contact under CFR21, Section 177.1520 Material -Polypropylene felt bags are all non-supported Polypropylene felt made from a mix of deniers of Polypropylene staple fiber, as well as differing felt weights, depending on the micron rating desired. All of Proof 33 Polypropylene bags have a glazed finish to minimize the potential for media migration.Style - Plastic flange bags have a specially-designed flange sewn to the top of the bag.Sizes - The following industry standard sizes are available: #1 bags - 7 1/16" Diameter by 16 1/2" Long #2 bags - 7 1/16" Diameter by 32" Long