Honeywell HC22A1007 used in the humidifiers HE220A1001 and HE220B1009. These panels can also be used in the HE225A1006 and HE225B1004 but does not have the antimicrobial protection.
We measured the size: 10-1/8 x 9-5/8 x 1½", but the sizes may vary an 1/8".
Replace the HC22A1007 once a year. Hard water conditions may require changing twice a year. The coating will start to crumble off when in need of replacement. We have noticed with hard water that calcium deposits can build up and fall off, then end up in the furnace filter. A high quality water filter suitable for use in food service equipment is recommended.
The water panels are made of aluminum and when time to discard can be recycled. When used the coating will be loose and can be rinsed off.