Pack of 2 Honeywell HAC-504 Humidifier Wick Filters. Aftermarket replacement filters manufactured by FilterBuy.</br>Designed by FilterBuy to fit Honeywell Cool Moisture Humidifier models 63-1508?? ECM250i?? DH835?? HCM-53x?? HCM-54x?? HCM-300T?? 310T?? 315T?? 330T?? 350?? 530?? 535?? 535-20?? 540?? 550-19?? 550?? 551?? 560?? 630?? 631?? 632?? 632TG?? 635?? 640BW?? 645?? 646?? 650?? 710?? HCM1000?? HCM1000C?? HCM1010?? HCM1010C?? HCM1020?? HCM2000?? HCM2000C?? HCM2001?? HCM2002?? HCM2020?? HCM2050?? HCM2051?? and HCM55019.</br>Compare to Honeywell Part # HAC-504AW. Dimensions: 5 H x 4 1/4 ID x 6 1/2 OD x 1 Thick.</br>Premium aftermarket replacement?? designed by FilterBuy in the USA.</br>Humidifier FilterBuy: Breathe Better!</br></br>Product Description</br></br><p> Pack of 2 FilterBuy Replacements for the Honeywell HAC-504AW humidifier filter. manufactured by FilterBuy specifically to fit Honeywell Cool Moisture Humidifier models 63-1508?? ECM25