The Air Filter is an OEM part for GE microwaves. This filter is designed to remove grease, smoke, and odors from the air that passes through the microwave's ventilation system, particularly in over-the-range models.The filter measures about 5 inches wide by 7-1/2 inches deep. Over time, regular cooking can cause buildup on the filter, reducing its effectiveness. Regular maintenance is essential to ensure proper air filtration. Symptoms of a bad Air Filter include: Persistent cooking odors in the kitchen Reduced ventilation performance Visible grease buildup on the filter Smoke not being effectively filtered during cooking This GE replacement part is also compatible with Hotpoint, RCA, and some Kenmore models.WB06X10359 (AP3185629) replaces 910504, AH228066, EA228066, PS228066, WB6X10359.