The Laars Heating Systems R2084700 FARMod Filter Kit is a genuine replacement filter designed for the Fuel/Air Ratio Module (FARMod) in compatible Laars OmniTherm commercial boilers. It filters contaminants from the air path associated with the FARMod, helping maintain clean and consistent airflow for proper combustion control. The filter is specified for OmniTherm models ranging from... https://www.partshnc.com/r2084700-laars-heating-systems-replacement-filter-kit