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.This Accessory Is Designed For Use With Select Range Vent Hoods; Check To See If Your Model Number Is Compatible. Set Includes Three Filters. Size: Approx. 10 L X 6 W Each. 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.