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.
The highest efficiency filter available, HEPA filters are primarily used in applications where weld fumes are most harmful. We recommend for use when welding on stainless steel, as the process emits Hexavalent Chromium. Efficiency Rating 99.97% at 0.3 microns.
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