This Range Hood Grease Filter Traps Grease From The Exhaust Air Of Your Oven To Prevent It From Entering The Blower And Vent. Potentially Causing Build-Up And Damage. If Your Current Filter Can No Longer Be Cleaned And Is Not Functioning Properly. Replacing This Accessory May Alleviate The Issue. Replacing This Accessory Will Require No Disassembly Or Repair Experience. Recommended Item: The Heavy Duty Degreaser Spray Cuts Through Grease. Oil And Burned-On Spills That May Clog Your Microwave'S Filter.