Slim Line Filter Housings are available in either reinforced polypropylene or clear in 5", 10" and 20" lengths. The black or blue reinforced polypropylene housing caps are available with 1/4", 3/8" or 1/2" NPT connections. Four bosses are molded into every cap for mounting purposes. They are equipped with a black, reinforced polypropylene cap and offer an optional pressure-relief button on the inlet side to relieve pressure inside the housing when changing filter cartridges. Opaque Slim Line Filter Housings, molded from rugged reinforced polypropylene, offer outstanding chemical compatibility and are ideal for use in a variety of low-flow applications. Clear Slim Line Filter Housings offer on-site examination of flow, performance, and cartridge life. They are also ideal for a variety of applications. Additional Details ------------------------------ Product description: Slim Line Filter Housings are available in either reinforced polypropylene or clear in 5", 10" and 20" lengths. The black or blue reinforced polypropylene housing caps are available with 1/4", 3/8" or 1/2" NPT connections. Four bosses are molded into every cap for mounting purposes. They are equipped with a black, reinforced polypropylene cap and offer an optional pressure-relief button on the inlet side to relieve pressure inside the housing when changing filter cartridges. Opaque Slim Line Filter Housings, molded from rugged reinforced polypropylene, offer outstanding chemical compatibility and are ideal for use in a variety of low-flow applications. Clear Slim Line Filter Housings offer on-site examination of flow, performance, and cartridge life. They are also ideal for a variety of applications.