The Reznor 124940 Inlet Guard Ring Plated is a protective component designed for the combustion air intake assemblies of compatible Reznor gas-fired unit heaters and separated-combustion heating equipment. It fits around the air inlet to help shield the opening from debris and unwanted foreign objects while allowing combustion air to enter the system. Its plated finish provides durabi... https://www.partshnc.com/124940-reznor-inlet-guard-ring-plated