This charcoal filter is used on microwave ovens to filter grease and other air contaminants during cooking. This filter contains charcoal for added filtering and is not washable. When the filter becomes clogged, it must be removed and replaced. If the air filter is clogged, smoke and fumes will not be cleaned, and the room will fill with odors during cooking. The charcoal filter catches grease spatters, and if greasy foods are cooked often, the filter will need to be changed more often. The filter should be removed and replaced regularly and anytime that it is not working efficiently. Removing the filter does not require tools. Pull the old filter straight out and push the new one in place.This charcoal filter is a silver metallic part that is sold individually. It is designed for use in microwave ovens designed by General Electric.WB02X10733 (AP3668421) replaces 868863, AH224009, EA224009, JX81B, PM02X10733, PM02X10733DS, PS224009, WB2X10733.