Rigid Cell Air Filter, Style - Air Filters Box, Performance Rating MERV 13, Nominal Filter Size 20x24x12, Filter Efficiency - Air Filters 85 Percent, Media Material Fiberglass, Frame or Header Material Galvanized Steel, Air Filter Header Type Single Header, Gasket Location None, Gasket Material None, Media Color Yellow, Media Area 40 sq ft, Media Separator Construction Metal Pleat