The TurboChef HHD-8422 Air Filter Double Batch is a part of the compatible high-speed cooking equipment. It is installed in the oven airflow system to trap grease, dust, and airborne particles before they can get to the internal parts of the oven. This filter can ensure the correct air flow circulation and to maintain the cooling and ventilation efficiency during operation. It is used... https://partsfe.com/hhd-8422-turbochef-filter-airdouble-batch-turbo-chef