Model W11197817 Range Hood Replacement 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, you should replace it promptly with this item. This charcoal filter replacement is an accessory that can be used across several brands; check to see if your model number is compatible. Installing this accessory will require basic hand tools and novice installation experience. Remember to unplug the appliance or shut off the house circuit breaker before installing this part.