Keep airborne grease away from the inside of a range hood with this aluminum mesh filter. Measuring about 10.5 by 12 inches, it fits below the blower and catches grease released during cooking while allowing exhaust air to pass through. Regular cleaning supports steady airflow and helps protect the fan and inner hood surfaces from sticky ...Read morebuildup. The metal filter can be washed as needed in a dishwasher or in hot water with detergent. Replace it if the frame is bent or the mesh is torn, crushed, or heavily clogged. Turn off the hood and let the cooktop cool before removal.