Whole House Carbon Block Filter 5 Micron 2.5" X 20" Coconut Shell Carb – Express Water
Amazon.com: Big CTO Carbon Block Water Filters 4.5" x 10" Whole House Cartridges * WELL-MATCHED with CBC Series, WFHDC8001, EP and EPM Series (4 Pack) : Tools & Home Improvement
20" x 4.5" 5 Micron Carbon Block Water Filter Cartridge with Scale Inhibitor
SimPure Coconut Shell Activated Carbon Whole House Sediment Water Filter Cartridge Replacement |20" x 4.5" Carbon Block Filter 20 inch (2 pack)
Amazon.com: 10 Pack Activated Carbon Block ACB Water Filter Replacement – 5 Micron, 10 inch Filter – Under Sink and Reverse Osmosis System : Tools & Home Improvement
Express Water 5 Pack Big Blue Water Filter Activated Carbon Block Filter - Whole House - 5 Micron - 4.5" x 10" inch FLTWH1045C05 - The Home Depot
0.5 micron Coconut Shell CTO, Cyst Carbon Block Water Filter Cartridge – Blue Gold For Life Inc