CFS Water Filter Housing Wrench for 4.5" Wide-Body ("Big Blue" Style) Housings – Spanner Tool Compatible with PWF45W, AP802, Pentek Big Clear, Pentair, 3M Aqua-Pure AP801 – Black, 1 Pack

CFS Water Filter Housing Wrench for 4.5" Wide-Body ("Big Blue" Style) Housings – Spanner Tool Compatible with PWF45W, AP802, Pentek Big Clear, Pentair, 3M Aqua-Pure AP801 – Black, 1 Pack

• FITS 4.5" WIDE-BODY ("BIG BLUE"-STYLE) HOUSINGS: Designed for standard heavy-duty / whole-house 10" and 20" wide-body filter housings.
• MEASURE FIRST: Fits housing caps about 7.5 in (19 cm) outside / 5.8 in inside diameter. Before ordering, measure across the cap — the threaded ring at the top of your housing — to confirm it matches.
• CONFIRMED COMPATIBLE: PWF45W, 3M Aqua-Pure AP801/AP802, Pentek Big Clear, Pentair, Atlas Filtri, Culligan HD-950, YTB and other wide-body housings using a ~7.5" cap.
• DOES NOT FIT slim-line or standard 2.5" housings (caps too small) or oversized jumbo/commercial housings (caps too large). When in doubt, measure your cap first.
• DURABLE ONE-PIECE SPANNER: Sturdy build gives the leverage to loosen tight housings for cartridge changes on RO systems and under-sink / whole-house filters.