Pentair Pentek 158623 3G Slim Line Filter Housing, 1/2" NPT #10 Under Sink Clear Water Filter Housing, Mounting Bracket Cap with Pressure Relief Button, 10 Inch, Blue/Clear, is a slim filter housing that is ideal for low-flow applications with space restrictions. Clear sump housing offers on-site examination of flow, cartridge life and performance. It has a pressure relief button for easy cartridge replacement. It is compatible with any 10" x 2.5" sediment or carbon filter cartridge. The mounting bracket cap allows housing to be mounted to a single or multiple housing bracket.