Add to Cart Compare Quick view HydroLogic Stealth RO100/200 Reverse Osmosis and Small Boy KDF85 Carbon Replacement / Upgrade Filter HydroLogic MSRP: $39.00 Now: $31.49 Was: This KDF85 / Catalytic Carbon Filter replaces or upgrades the one that comes packaged with the Hydro-Logic Stealth RO100 and RO200 reverse osmosis water filtration systems and the Small Boy Sediment filter system. It measures 10" H x 2.5" W. Now... MSRP: $39.00 Now: $31.49 Was: Add to Cart Compare Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: $39.00 Now: $31.49 Was: Subtotal: Add to Cart