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Filter Housings for 20" x 2-1/2" Cartridges

20" Standard Plastic Water Filter Housing

Water Filter Housings & Maintenance

Water filter housings are used mainly on reverse osmosis systems and under sink systems to hold the cartridges in place.

We also have step by step instructions on installing replacement cartridges and sanitizing filter housings. It is highly recommended that you clean and sanitize your system once a year.

Other Housing Sizes

10" Heavy Duty 20" Heavy Duty 5" Standard 10" Standard 10" Full-Flow 20" Full-Flow High Temperature


Filter Housings for 20" x 2-1/2" Cartridges

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Watts/Flowmatic® Standard 20" Filter Housing with 1/2" Ports
Watts/Flowmatic® Standard 20" Filter Housing with 1/2" Ports
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Watts/Flowmatic® Standard 20" Filter Housing with 1/2" Ports and Pressure Release
Watts/Flowmatic® Standard 20" Filter Housing with 1/2" Ports and Pressure Release
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Watts/Flowmatic® Standard 20" Filter Housing with 3/8" Ports
Watts/Flowmatic® Standard 20" Filter Housing with 3/8" Ports
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Pentek Slim Line 20" Filter Housings

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Pentek® Slim Line® 20" Filter Housing with 1/2" Ports and Pressure Release
NSF® Certified Pentek® Slim Line® 20" Filter Housing with 1/2" Ports and Pressure Release
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Click here for our Stainless Steel Commercial Filter Housings by H2O Distributors
Click here for our Whole House Water Filters by H2O Distributors
Click here for our Well Water Treatment Systems by H2O Distributors, Sterilight®, and Safe Water Technologies
Click here for our Whole House Water Softeners by H2O Distributors and Safe Water Technologies
Click here for our Sterilight® and Safe Water Technologies UV Systems