The Everpure EV311239 10" black prefilter replacement bowl is designed to enclose and protect compatible filter cartridges within a water filtration assembly. It works by threading onto the filter head, creating a sealed chamber that directs incoming water through the installed prefilter before it moves further into the system. This containment helps ensure proper filtration and preve... https://partsfe.ca/ev311239-everpure-replacement-bowl-10