Applicable Size: This versatile water filter housing wrench is fit for 20" Big White Housings, Compatible with 20 "Big Blue Enclosure and most other 20" Heavy Duty Enclosures, this wrench itself is not 20 inches, it is used for 20 inches old water softener filter, fits most standard Big Blue 10"x4.5" and 20"x4.5" filter element, If the diameter is 6.04 inches, you can use a water filter wrench, (PLEASE confirm the size of your Water Filter before placing an order)

Compatibility: This water filter housing wrench fit for Pentek SW-4, Fits American Plumber W2010-PR, W2015-PR, 152015, 152017, 152022, 144368, Fits Ametek Kleen-Plus 144368, Fits Pentek 150237, 150239, 150469, BBFS-22, BBFS-222, 144368, Fits Culligan HD950, HD950A,144368 Big Blues, Fits Whirlpool WHKF-DWHBB, WHCF-DWHBB, Fits Axeon RO Systems R1-6140, R2-6140, Fits FSD Filtration Systems FSD-120, FSD-200, FSD-320, Big Apec 20" and Compact 10" Housings and Fits Keystone, and more

Durable Construction: Crafted from high-quality PP material, this whole house filter wrench exceptional durability and resistance to wear and deformation, sturdy and durable, which has six teeth for a firm grip, to make the spun filter replacement easier, no more struggling with stubborn filters, ensuring long-term reliability for your water filter maintenance needs

Easy to install: Allows easy removal of the system sump to replace the water filter, use the SW-4 filter housing wrench only for twisting off water filter housing sumps, use the wrench to loosen the bottom of the housing during cartridge replacement, slide circular end over housing until a snug fit is achieved and unscrew, do not use the wrench to secure the canister after filter has been replaced, you may damage the oring by securing the water filter lid too tight, only hand tighten the housing

Versatile Use: For high flow all home systems, Ideal for both residential and commercial water filter systems, this wrench simplifies the process of changing water filters, Compatible with Blue House (20 inches) for 20 "Blue House, For removal of (SW-4) big blue Diameter 6 inches water filter, It's the perfect filter wrenches solution for maintaining your filtration system and ensuring clean, safe water for your home