This Range Hood Grease Filter traps grease and particulates from the exhaust air of your oven to prevent it from entering the blower and vent, potentially causing build-up and damage. This aluminum mesh filter is an accessory that can be used across several brands; check to see if your model number is compatible. Size is meant for 30" Range Hood and is 10-1/2" H x 9" W. 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.