Wicks contain more paper than the competition. The quality of our paper has greater absorbency, lasts longer and requires less energy to provide the same amount of humidification as the competition. The 1040 Super Wick is under our high quality control standards. Trapmax filtration technologyAntimicrobial protectionOut performs the competitionVirtually eliminates white dustUse only original Aircare filters for optimal performance of your humidifierUse of water softener voids warrantyUse with Aircare/Essick Air models 427 300, 447 400HB, 4D7-series, 4DTS-series, 696-series, 97-series and ED11-series