American Plumber, Culligan, GE, Pentek SW-3 Wrench for Big Blue Housings
Culligan / Pentek SW-3 Filter Housing Wrench Information: Use the SW-3 filter wrench only for twisting off water filter housing canisters. Use the SW-3 wrench to loosen the bottom of the housing during water filter cartridge replacement. Slide circular end over the housing until a snug fit is achieved and unscrew. Do NOT use the SW-3 housing wrench to secure the water filter canister to the water filter lid. You may damage the o-ring by securing the water filter lid too tight. The SW-3 water filter wrench makes changing water filters easy. The SW-3 spanner wrench can be used with #10 Big Blue whole house housings. The SW-3 wrench is slightly less than 6 Inches Wide. (Note: Width is less at the notches.)