1. Multi-layer filter design, cleans different pollutants, purifies more comprehensively 2. Effectively filters scale/debris 3. Anti-mildew/antibacterial, safe and healthy 4. For Balmuda Rain ERN1080 / ERN1180 / ERN1000 5. It is recommended to replace it every 3-6 months, the specific time depends on the machine prompt 6. Size: about 15.5 x 14.6cm
