The American Standard BAYPAD02A1310A Metal Filter is the correct compatible replacement filter for the following humidifiers:
The American Standard BAYPAD02A1310A Metal Evaporator Panel is the correct replacement filter for American Standard HUMD300A, 300T and 500A Humidifier systems, and measures approximately 10" x 13 1/4" x 1 1/2". It efficiently traps mineral contaminants and pollutants within the water filter to provide clean, moist air. These humidifier water panel filters improve conditions caused by low humidity, which can lead to health and environmental problems in your home. This American Standard humidifier evaporator pad is also available in the paper version, AprilAire 600 Humidifier Water Panel Evaporator. For optimum performance, this American Standard filter should be replaced every six months, or more often in hard water areas.