3M 5N11 Prefilter Bulk Discount 5/10 (%) whether a window installer or

whether a window installer or a DIY homeowner

thereby prolonging the operating life of the sensors

3 spare external filters

It does not conduct electricity and is self-extinguishing and cannot burn

3M 5N11 Prefilter Bulk Discount 5/10 (%) whether a window installer orSales Price Limited to Stock on Hand No Backorders Allowed. NIOSH Items: We only sell brand new respirators, filters, and dust masks from US based manufacturers. Since it can be difficult to determine if a respirator or mask has been used or even just tried on, for the protection of our customers, we do not accept NIOSH returns. The 3M 5N11 Prefilter is a N95 filter for use with a 501 filter retainer. N95 filters are for use with toxic dusts or mists