HEPA air filter at 99.97% efficiency is ISO rated H12 and measures 24 x 12 x 11.5 exact outside dimensions. Guaranteed performance. 99.97% @ 0.3 micron ISO H12 Rated 24" x 12" x 11.5" Outer Frame Dimensions 18 gauge Galvanized Steel Frame Heavy Duty Corrugated Aluminum Separators 75 sq.ft Bi-Directional Waterproof Certified Ultrafine Microglass Paper Media 1/4" Neoprene Gasket One Face Polyurethane Filter Pack Sealant 0.95"w.g. @ 550 CFM Filtra-Systems Micro-Cell HEPA filters filters are designed to meet critical filtration requirements in the most sensitive applications. Micro-Cell HEPA filters are constructed using ultrafine wet-laid microglass filter media and corrugated aluminum pleat separators. Micro-Cell HEPA filters are recommended for use in medical facilities, pharmaceutical mfg., food processing, microelectronics mfg., and nuclear or biological applications.
