Broan-Nutone Genuine Replacement Aluminum Filter For 36″ Range Hoods, 15-3/4″ X 16-7/8″, Fits Select Models, (2-Pack) Keep Your Range Hood Operating At Peak Performance With The S99010430-003 Aluminum Filter. This Filter Is Used In Ducted Applications To Capture Grease And Particulates Generated During Cooking. Replace Or Clean Your Filter Every 6 Months, Or More Often If Your Cooking Style Generates Extra Grease.