This Range Wall Hood Recirculation Kit 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 Is No Longer Functioning Properly. Replacing This Filter May Alleviate The Issue. This Accessory Can Be Used Across Several Brands; Check To See If Your Model Number Is Compatible. Installing This Part Filter Will Require Basic Hand Tools. Some Disassembly Of The Microwave And Novice Repair Experience.