Honeywell HC22E1003 used in the humidifiers HE105A1000, HE225A1006 and HE225B1004. These panels can also be used to upgrade the HE220A1001 and HE220B1009 to have antimicrobial protection.
We measured the size: 10-1/8 x 9-5/8 x 1½", but the sizes may vary an 1/8".
The HC22E1003 water panels have an Agion® antimicrobial coating. Agion incorporates silver that naturally inhibits bacterial growth. Silver is proven to be safe and non-toxic.
Replace the HE22E1003 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.