HEPA filter replacement for Trion 257421-101, 257421101 with wood frame. Measures 12x12x11.5 inches and is 99.97% efficiency. Guaranteed to fit and perform! Replacement HEPA Filter for Trion 257421-101, 257421101 12 x 12 x 11.5 inch 99.97% HEPA Filter, Wood Frame 100% Guaranteed Fit and Performance Fits model OMP 200 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. *NOTE: Brand names are used for identification purposes only, and are the intellectual property of the OEM. Filters are OEM Replacements manufactured by Filtra-Systems and are not OEM Brand products unless specifically stated as such. Filtra Supply is not related to the OEM.
