aprilaire 550 filter

Reinforced paper construction means more water-holding capacity and 50% higher output than rigid metal pads. Pad must be changed at least twice per season.

Whole house humidifier filter pad for use with Aprilaire 110, 220, 550, 558, Chippewa 220, Honeywell HE220A, 220B, 225A, 225B, Lasko 5000L, 5000EC, 6000, Hamilton 12HF, and Lennox ...

Honeywell HC22A1007 HE220 Humidifier Pad