Allegro filters and pre-filters are offered in six different combinations and allow maximum flexibility for varying work applications (including HEPA for Hexavalent Chromium control and 95% for carbon steel weld fumes). All filters are made in the USA.
A highly efficient filter, 95% filters are used with effective results in most welding applications. We advise using a 95% filter when welding on carbon and galvanized steel. Efficiency Rating 95% at 5 microns.