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 GVP-443 organic vapor / acid gas / HEPA cartridge is used with the 3M Belt-Mounted and Vehicle-Mounted Powered Air Purifying Respirator (PAPR) Systems. It attaches to the motor blower and filters the air supplied to the headgear. This item is sold individually, and is used 1 at a time on the PAPR.