Sunbeam SF212 Humidifier Filter with Color Check, 2PK Contains antimicrobial product additive for built-in protection Inhibits the growth of bacteria, mold and mildew. Uses arm & Hammer baking soda to naturally deodorize the air For Sunbeam humidifier models: Scm1701, Scm1702, Scm1762, Scm2409, Scm1100 and Scm4100. The arm Hammer Name logo and associated marks are trademarks of Church dwight Co. Inc. Used under license Includes color check, a Purple color Strip that turns red when it's time to change the filter