Cascade Filt-A-Pack Pro-Carb-Z Activated Carbon & Zeolite Filter Bags for Cascade Cannister Filters， 4-pack</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Convenient， ready-to-use filter bags for use with your Cascade® cannister filter.</li><li>Each Bag contains Pro-Carb® laboratory quality activated carbon with Pro-Z® ammonia removing zeolite crystals.</li><li>Fits easily into all Cascade® cannister filters.</li><li>Filter media fully enclosed in a disposable nylon-mesh bag.</li><li>Also fits many other branded cannister filters.</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/51uPn%2B0S24L.jpg' noproxy></br>