The Nieco 19970 Flame Arrestor, measuring 30" x 9-3/4", is designed to enhance safety by preventing open flames from entering or escaping specific areas within commercial kitchen equipment parts. This component functions by dissipating heat and extinguishing flames through its metal mesh design, which interrupts the combustion process. Installed as part of a ventilation or burner syst... https://partsfe.com/flame-arrestor-for-nieco-part-19970