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Filter housings from Grainger come in a wide range of sizes and styles for use with select filter cartridges. Materials used to increase usability include stainless steel, polypropylene, glass-reinforced nylon, carbon steel and more. Typical uses for filter housings include but are not limited to but are not limited to, undersink residential filtration, pre- and post-reverse osmosis systems, recreational vehicle filtration, and food service.