Survivair N95 Pre-filters are recommended for dusty conditions
N95 pre-filters are recommended for dusty conditions and requires the use of a retainer (Item 184485, sold separately). For use with the bayonet mount style Opti-Fit™, Valuair® Plus, Max™ and Premier® respirators from Survivair®. NIOSH Approval No. TC-84A. Box of 24.
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2016 Master Catalog: Page 28