The Grease Filter is an OEM part for Whirlpool microwaves. This filter is essential for trapping grease and other airborne particles generated during cooking, helping to maintain cleanliness and ensure proper ventilation. This part measures about 10.75" by 6". You should replace this grease filter if it becomes clogged or damaged. Causes of a bad grease filter can include regular accumulation of grease and food particles, deterioration from heat exposure, or physical damage from cleaning. Symptoms of a bad grease filter include: Reduced airflow and ventilation Noticeable grease buildup on surrounding surfaces Unpleasant odors during and after cooking The filter appearing visibly clogged or damaged This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.8206229A (AP4299836) replaces 1266638, 8206229, 8206229ARP, AH1871362, EA1871362, PS1871362.