When installed inside the filter cover of a TR-300 PAPR, the TR-3600 prefilter can extend the life of the HE filter by capturing large particles that would otherwise clog the HE filter. Help maximise the service life of your 3M Filters with 3M Prefiltes. Prefilters help prevent clogs by capturing large particles before they reach the filter. Frequently replacing the prefilter can help to maintain system performance. Prefilters are maintenance-free and should be discarded when clogged or damaged. For safety and comfort, make it a habit to check and replace old or damaged parts as needed. 7000127713 - 50051131173694
