This humidifier wick replacement filter traps water impurities and dissolves solids before they become airborne. It will fight against the growth of bacteria， mold， and fungus， to relieve dry sinuses and cold symptoms. Please note that this is a replacement/aftermarket product， not an OEM product. Any brand names or logos are the registered trademarks of their respective owners and is made solely for purposes of demonstrating compatibility.
4-pack replacement humidifier Water Panel Pad， Compare to Aprilaire Part # 45
Fits Aprilaire furnace humidifier models 400， 400A， and 400M
Filters minerals and pollutants from water before they are fed into the air， and helps control dust/dirt buildup inside humidifier
For optimum performance replace twice a year at the start and end of the heating season
Approx dimensions: 129 in. x 12 in. x 77 in. - by LifeSupplyUSA
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