3MDW311 Reverse Osmosis Replacement Filter Cartridge

3MDW311 is a replacement filter cartridge engineered to help keep your water clean and your system performing reliably. It’s a simple, effective way to maintain water quality between full system services.

• Under‑Sink Convenience: Quick, mess‑reducing changeouts in tight spaces.
• Protects Appliances & Fixtures: Regular replacement supports consistent performance.
• Simple Maintenance: Quick‑change design makes routine service straightforward.

At a Glance:

• Under-sink drinking water filter cartridge
• Multi-stage design with membrane & activated carbon block media

Replace cartridges on the recommended schedule to maintain flow and performance.