The Broan S99528415 Range Grease Filter Service used to capture grease and airborne cooking particles to support cleaner and more efficient range hood operation. This replacement grease filter is designed for compatible Broan range hood models and fits into the ventilation system above the cooking surface. It works by allowing air to pass through the filter media while trapping grease... https://www.hnkparts.com/broan-s99528415-grease-filter-service