3M™ Combination Filter CF22 A2B2E1P3 R D DT-4036E (Each)3M DIN Threaded Gas, Vapour and Particulate Filters are AS NZS 1716 approved and conveniently provide protection against a wide range of gases, vapours and particulates depending on the model selected. They have a DIN Threaded connection that fits any 3M DIN Thread Reusable Respirator. These filters offer heavy duty breathing protection for a wide range of hazardous environments. Designed for heavy duty applications, 3M DIN Threaded Gas, Vapour and