Pre-assembled units save time and reduce chance of error in selecting or assembling cartridge/filter combinations. The 7140 combines the 7100 organic vapor cartridge, the 7920 piggyback adapter and the 7940 P100 particulate filter disk. The 7640 combines the 7600 multi-gas/vapor Smart® cartridge, the 7920 piggyback adapter and the 7940 P100 particulate filter disk. For use with 7000 half mask or 9000 full face respirators.
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