This Range Hood 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 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, Some Disassembly Of The Range Hood And Novice Repair Experience. Helpful Tip: Replace Your Range Hood S Filter Every 6 Months To Maximize Performance And Efficiency.