This is the replacement charcoal filter for your microwave. It is silver and black in color and measures approximately 11 inches by 2 ½ inches. The charcoal filter removes cooking odors from the air that circulates through the microwave vent. You will likely need to replace the charcoal filter if you notice any damage to it, or if it has been in your microwave for a long time. This part is sold individually and is an authentic OEM part sourced directly from the manufacturer.