Designed to fit for Honeywell Humidifier models 63-1508, ECM250i, DH835, -53x, -54x, -300T, 310T, 315T, 330T, 350, 530, 535, 535-20, 540, 550-19, 550, 551, 560, 630, 631,, 632TG, 635, 640BW, 645, 646, 650, 710, 1000, 1000C, 1010, 1010C, 1020, 2000, 2000C, 2001, 2002, 2020, 2050, 2051, and 55019.
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