CE approved for use against a range of gases, vapours and particulates depending upon the model selected. DIN40 mm threaded connection fits a wide range of compatible half and full face piece 3M™ Reusable Respirators. Also compatible with certain 3M™ Powered Air Respirators. Use with CE approved 3M™ Half and Full Face piece Reusable Respirators FF-300, FF-600 and HF-300. Also compatible with 3M™ Powered Air Respirator PF-600+