3M Organic Vapour Disposable Respirator, face mask, for spraying non-isocyanate based paints and certain adhesives, coatings and sealers. This is a valved mask complete with 2 filters. The mask can last up to 40 hours of use, as long as it is kept in a sealed, airless container when not in use (ie. the resealable bag it comes in) This mask meets the very latest European Standards.