Culligan D-20A Basic Drinking Water Filtration Cartridge | 1,000 Gallons, 3-Pack

Overview

The Culligan D-20A Basic Drinking Water Filtration Cartridge brings a slim, installer-friendly upgrade to your under-sink system. Designed for quick replacement and reliable performance, it supports clean, fresh-tasting water for drinking, cooking, and everyday use without the need for a full countertop unit.

Universal compatibility and easy installation

This cartridge uses a universal slim design engineered for ease of swap within Culligan undersink filters. It fits No US-550 and US-600 models and also works with US-560, US-560K, CTR-210, and SY-5167 units. The goal is straightforward: less hassle when you need to refresh your filter cartridge.

• Slim, universal design for quick installs
• Compatible with multiple Culligan undersink models
• Simple cartridge replacement with minimal tools

Taste, odor, and water quality

Activated carbon granules provide a high surface area to interact with water as it passes through. Expect water that tastes cleaner and smells fresher, especially regarding chlorine notes in tap water. The result can be a more enjoyable sipping and cooking water experience.

• High-surface-area activated carbon for flavor improvement
• Chlorine taste and odor reduction
• Better water for beverages, soups, and cooking

Longevity, certification, and user confidence

Each cartridge is designed for up to 12 months or 1,000 gallons of use, depending on your water usage and quality. It is NSF International tested and certified, offering third-party verification of filtration performance without implying guaranteed results.

Real-life use scenarios

Beyond basic hydration, consider how filtered water can support daily routines around the home.

• Chill and refresh a cold glass of water after workouts
• Enhance coffee or tea with crisper water
• Improve soups, sauces, and home-made ice cubes