by Aprilaire
(14)Buy new:
11 used & new from $5.99
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Original Factory Replacement Water Panel Evaporator for Aprilaire Humidifier Models 110, 220, 500, 550, 558
Dimensions: 9-1/2 x 9-3/4 x 1-1/2
Humidifier water panels (sometimes referred to as a filter) are a regular replacement item in whole-house humidifiers. For the best performance we recommend that the Water Panel be replaced once a year, either prior to the start or at the end of the heating season. If you have especially hard water - the panel can be replaced 2 times per year.
