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.