Spanner wrench designed to loosen slim line filter housings during cartridge replacement. Fits standard slim line housings with 3/8" inlet/outlet. Use for loosening only -- always hand-tighten the housing when reassembling.

• For slim line filter housings with 3/8" inlet/outlet
• Fits Culligan US-550, US-560, US-316, SY-5167, SY-5197, and RVF-10 housings
• Also fits Pentek, Ametek, US Filter, and American Plumber slim line housings
• Polypropylene construction
• For loosening only -- hand-tighten to reassemble