Manufacturer: Rps Products Inc
Brand: BestAir-Pro
(6-Pack)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.Most water panels are made of a rigid expanded aluminum grid that is dipped in a clay solution. These pads are made of an expanded paper and as a result are able to hold more water than traditional pads. They have up to 50% higher moisture output than metal pads. Unlike metal pads, these should be changed twice during the humidification season.Surface treated with MicroFree Anti-Microbial Coating. This water panel is made by a leading manufacturer to fit:Aprilaire -  Models 110, 220, 500, 550, 550A, 558 Humidifiers (same as # 10).Honeywell - Models HE220A, HE220B, HE225A, HE225B (same as HC22A1007, HC22E1003, HC22P)Lasko - Model 5000LHamilton - Model 12HFDimensions Approximately 10" W X 9 1/2" H X 1 5/8" DNote: This product is not manufactured or distributed by Research Products Corporation, owner of the registered trademark Aprilaire.Click here for instructions on changing out your water panel