The Pentek 158642 3G Slim Line housing has a compact design to reduce the amount of space needed for installation without sacrificing filtration capacity. Its pressure release button helps simplify filter replacement. The 158642 work wells in a variety of low-flow applications, in undersink systems as well as in pre- and post-reverse osmosis systems. This housing may also be used in some humidifying systems, recreational vehicle filtration systems and food service applications. The structural integrity of the housing materials are NSF/ANSI Standard 42 tested and certified.