The Range Hood Charcoal Filters trap 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, you should replace it promptly with this item. This kit includes (2) charcoal filters measuring 16″ L x 6″ W x 2″ H each. These filters can be used across several major brands; check to see if your model number is compatible. Installing this accessory will require basic hand tools, some disassembly of the range hood and novice repair experience. Helpful Tip: Replace your your range hood s filter every 6 months to maximize performance and efficiency.