Slimline Filter Housings are available in either reinforced polypropylene or clear Styrene-Acrylonitrile (SAN) 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 moulded 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 Slimline Filter Housings, moulded from rugged reinforced polypropylene, offer outstanding chemical compatibility and are ideal for use in a variety of low-flow applications. These applications include under-sink and countertop residential filtration, pre- and post-reverse osmosis filtration, recreational vehicle filtration, foodservice and humidifying systems. Clear Slimline Filter Housings offer on-site examination of flow, performance, and cartridge life. They are also ideal for a variety of applications.