This Over-The-Range Microwave 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, You Should Replace It Promptly With This Item. 2-Pack. Size: Approx. 12" L X 6" W. Replacing This Part Will Require No Disassembly Or Repair Experience.