Check the listing for details. Pentek BP-420-50 Bag Filter 20in Actual Dimensions 4"x18". Condition: New. Listed at 8.73 USD. The Pentek BP-420-50 replacement is constructed of a glazed polypropylene felt that resists corrosive fluids such as acids, alkalis, oils, organic solvents and microorganisms. The semi-rigid cylindrical design allows the filter to be crushed and incinerated for easier disposal. Created by needle-punching two layers of synthetic fibers together, the result is a higher solids loading capability when compared to similar mesh fabrics. Following this process the outermost surface fibers of this filter media are then glazed to forge a bond that reduces migration possibilities. Help keep water clean by removing unwanted sand, silt, scale, and rust particles from residential and industrial fluid applications. Pentek BP-420-50 is compatible with the following filters: Pentek 155392-03, BP420Ametek 155392-03, BP420US Filter 155392-03, BP420 Pentek BP-420-50 Specifications: Part number: BP-420-50Micron Rating: 50Dimensions: 4"x18" Filter Media: Glazed Polypropylene FeltMax. Temp.: 200 F The Pentek BP-420-50 20" Bag Filter Bag Filter fits the Pentek PBH-420-1 and PBH-420-1.5 Bag Filter Vessel Filter Systems, as well as other brand housing assemblies for 20 inch bag filters.