990-13 Humidifier Vapor Water Pad Filter Compatible with GeneralAire 990-13 G...
𝗘𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝘁 𝗙𝗶𝗹𝘁𝗿𝗮𝘁𝗶𝗼𝗻 𝗦𝘆𝘀𝘁𝗲𝗺: The 990-13 humidifier vapor pad effectively does a very good job of filtering out the hardness minerals in the water and preventing a white powder from entering the room air and depositing on everything in sight.