Wilson 6 Wilson R21 Cartridges for Organic Vapors MESA NIOSH Approved NIOB

6 Wilson R21 cartraidges for organic vapors. MESA and NIOSH approved. Box was opened and two filters were taken out of their sealed bag. They were not used 2 the other four in the box are still in their sealed bags. The box has been opened several times and is in bad shape. Make sure your mask takes these cartridges. Interested, make an offer. From a smoke and pet hair free home. Fast shipping