The Star Mfg 5N22618 Oven Pre-Filter Hood helps capture airborne grease, dust, and other particles before they enter compatible ventilation systems. This universal pre-filter measures 16 inches by 20 inches by 2 inches and is designed for use with suitable commercial oven hood applications. During operation, air passes through the filter media, where airborne particles are collected t... https://partsfe.ca/5n22618-star-mfg-pre-filter