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. The TR-6600 prefilter can extend the service life of the particulate (HE) element of TR-600 series filters and cartridges by capturing large particles that may otherwise clog the HE filter, reducing Powered Air Purifying Respirators (PAPR) operating costs. The TR-6600 is maintenance free and should be discarded when loaded or damaged.

• For industrial/occupational use only. Not for consumer sale or use.