Under Sink Water Filter Replacement Cartridges
Don’t settle for a replacement under sink water filter cartridge that simply fits, find one designed and manufactured specifically for your under sink water filter system.
Discount Filter Store has one of the largest selections of undersink filter cartridges. With under sink filter cartridges available in over 15+ different filter medias, 8+ different sizes (5x2½ - 20x4½), and a wide variety of filter life’s ranging from 250 gallons to 50,000+ gallons, you’re guaranteed to find the under sink water filter system and/or replacement cartridges you need. Choose from hundreds of under sink water filter cartridges from some of the industry’s top brands including American Plumber, Crystal Quest, Pentek®, Culligan®, GE, Aqua-Pure®, Whirlpool®, and more.
Fits American Plumber W38-PR and most standard size water filter housings Learn More$19.99 MSRP: $26.44
Fits American Plumber WGC478 Learn More$13.99 MSRP: $14.94
Fits American Plumber W10-PR and W15-PR and most other heavy duty water filter housings Learn More$34.99 MSRP: $48.29
Fits Culligan SY-750s, RV-750, IC-750, SY-1000, SY-1000s, RV-1000, and IC-1000 filter systems Learn More$18.49 MSRP: $28.99
Fits any brand of undersink water filtration system that accepts filter cartridges sized 9 3/4 x 2 1/2 Learn More$16.99
Fits standard 9 3/4-inch x 2 1/2-inch replacement filter cartridges. Learn More$12.99