Replacement filter for Honeywell and Aprilaire Humidifier Models. Also Fits Some Chippewa Models and Walton Models. To maximize performance it is best to change at least two times per season. The anti-microbial coating helps prevent mold, bacteria, fungus and algae growth on the pads.

Includes: 1 Replacement Pad

Measures: 11-1/2" x 1-1/2" x 14-1/2"

Fits Models:
Aprilaire Models: 112, 136, 224, 440, 445, 445A, 448

Chippewa Models: 224, 225, 226

Walton Models: 600, 620, 660

Part Number: HC18P1009, HC18P