Honeywell HC26A1008 water panel used in the humidifiers HE205A1000 HE260A1002, HE260B1000, HE360A1019, HE360B1009. These panels can also be used in the HE265A1007, HE265B1005, HE365A1006, HE365B1004 but does not have the antimicrobial protection.
We measured the size: 13-1/8 x 10-1/8 x 1½", but the sizes may vary an 1/8".
Replace 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 HC26A1008 water panels are made of aluminum and can be recycled.