Culligan D-20 Undersink Water Filter Replacement Cartridge for Water Filtration System - Easy Installation & Compatible Design Fits Standard Underskink Systems, Redcuces Sediment, Rust, Dirt & Scale
Culligan D-20 Undersink Water Filter Replacement Cartridge for Water Filtration System - Easy Installation & Compatible Design Fits Standard Underskink Systems, Redcuces Sediment, Rust, Dirt & Scale
Couldn't load pickup availability
- 24/7 Customer Support
- Risk-Free 30-Day Returns
- Fast & Reliable U.S. Shipping
Contact Information
Contact Information
30-Day Hassle-Free Returns
30-Day Hassle-Free Returns
Not satisfied? Return your order within 30 days for a full refund or exchange — simple and easy.
✔ Easy return process
✔ Fast refunds
✔ No hidden conditions
Fast U.S. Shipping
Fast U.S. Shipping
We ship within the United States only — no international delays.
✔ Processing time: 1–2 business days
✔ Delivery time: 3–7 business days
✔ Real-time tracking available
👉 Track your order anytime from the header via Track Order
About This
- EASY INSTALLATION: Designed for quick under-sink replacement with minimal tools
- SINGLE STAGE FILTRATION: Provides effective water purify performance for clean drinking water and everyday use
- COMPATIBILITY: Replaces US-550, US-600, US-560, US-560K, CTR-210, SY-5167, and RO-3167 filters; Works with US-550, US-600A, and RO-2127 filtration systems
- FILTER LIFE: Up to 12 months or 1,000 gallons, depending on usage and filtration load
- CERTIFICATION: Tested and certified by IAPMO against NSF/ANSI Standard 42 for the reduction of aesthetic chlorine taste and odor
Overview
- Material : plastic and fiber
- Product Dimensions : 2.5"D x 2.5"W x 9.75"H
- Item Weight : 0.8 Pounds
- External Testing Certification : NSF
- Product Benefits : Bad,Clean,Freshening

Experience the difference clean, softened water makes in your daily life — from healthier skin to better tasting drinking water.
👉 Softer skin and smoother hair with every shower.
👉 Prevent scale buildup and keep your appliances running efficiently.
👉 Softer, brighter clothes that last longer with every wash.
See the Difference in Your Water — Instantly
Hard water, chlorine, and hidden contaminants can affect your health, skin, and appliances.
Our advanced filtration system removes impurities and delivers clean, safe water throughout your entire home.
Feel the difference in every drop — from your kitchen to your shower.
FAQ
Water Filtration & Home Water Guide