HQRP Wick Filter for Sunbeam SCM1745 SCM1746 SCM1747 Cool Mist Humidifier ; SWF64CS SWF64 Type E SWF-64 HWF64 Replacement Coaster HQRP&reg; Humidifier Wick Filter (Type E) Replacement + HQRP&reg; Coaster; Improves efficiency of the humidifier, traps mineral deposits from the water; Extended filter life with help of reinforced outer layer; Replace filter every 4-6 weeks, depending on usage and hardness of water; 2 weeks DOA replacement warranty!