Now a Carbon Filter as innovative as the Whisper® EX Filtration System it's designed to fit. Tetra Carbon Filters' layers of multi-density floss effectively trap even the smallest particulates while activated carbon rapidly eliminates odor, discoloration, impurities, and toxins.

The result? Water that's clear, healthy, and polished.

Fits:
Medium EX - Whisper EX20
Large EX - Whisper EX30, EX45 & EX70

Instructions: 

1. Coarse layer - Removes larger particulates.
2. Activated Carbon - Rapidly removes odor, discoloration, impurities and toxins leaving your water clear, healthy and polished.
3. Multi-density layer - Specially designed to capture a full range of particulates giving you unmatched water clarity.