HEPA Air Filter Style - Air Filters Box Actual Filter Size 12 in x 12 in x 11 1/2 in Performance Rating HEPA Filter Efficiency - Air Filters 99.97 Percent Frame or Header Material Galvanized Steel Gasket Location None Gasket Material None Common Applications General Use Air Filter Frame Style Box Media Material Microglass Media Color White Media Separator Construction Aluminum Filters Out All Combustion Smoke Carbon Dust MERV 17-20 Virus Sea Salt