20″ Water Filter Housing Wrench
This water filter housing wrench is used to loosen the base of a standard Big Blue filter housing when changing the cartridge. Standard filter housings are used with cartridges that measure approx. 20″ x 4.5″. This filter wrench is recommended with four slotted style of filter housing and may not work with other filter housing types but we have found this handle works with most water filter housings.