GA10 Humidifier Vapor Pad for GeneralAire Model 3200 | GFI #7905 2 Pack

Fits below models:

• GeneralAire Model: 3200
• Aprilaire Models : 110, 220, 500, 500A, 500M, 550, 550 and 558
• Honeywell Models: HE100, HE150, HE225, HE225, HE240, and HE280

Insert with the Black dot on top