HQRP Filter 3-Pack for Sunbeam SCM3501 SCM3502 SCM3657 SCM3755 7400001000489 Humidifier Coaster HQRP&reg; 3-pack Cool Mist Humidifier Wick Filter "D" Replacement plus HQRP&reg; Coaster; Filter Helps To Capture Mineral Deposits And Improve Efficiency Of The Humidifier; For Maximum Performance Change Filter Every 30 Days; 100% Compatible with Original filter. 2 weeks DOA replacement warranty!