AEROMetallic filters are permanent filters with layers of aluminium slit and expanded into mesh of differing densities, encased in an aluminium or galvanized steel frame. FLA9 model filters are washable type panel filters made up of 9 ply aluminium filter media in single layer or two layers, encased in an aluminium or galvanized steel frame. FLA12 model filters follow the similar construction, but use a 12 ply filter media to enhance the filtration and dust holding capacity.
