10 inch Granular Activated Carbon Filter 300g - Streamline Systems
Amazon.com: Express Water – 1 Pack Granular Activated Carbon GAC Water Filter Replacement – 5 Micron – 10 inch – Under Sink and Reverse Osmosis System : Everything Else
4 Big Blue GAC - Granular Activated Carbon Water Filter Cartridges 4.5" x 10" | eBay
Wrekin Water GAC-20BB (HFGAC5-20) Jumbo High Flow Granular Activated Carbon 20in Liff HFGAC5-20 compatible From £67.20 - Wrekin Water Softeners