This Over-The-Range Microwave Charcoal Filter traps grease from the exhaust air of your oven to help prevent it from entering the blower and vent, potentially causing build-up and damage. If your current filter is no longer functioning properly, replacing it may alleviate the issue. This is an accessory compatible with several major brands; check to see if your model number is compatible. Size: 5" W x 5" L. Replacing this accessory will require no disassembly or repair experience.