Effective May 31st 2017, select Duo-Flo Respirators will be discontinued from MSA's Supplied-Air product line.  The part numbers listed below will be affected:

Replacement parts for the Duo-Flo Respirator will be available until inventory is depleted.  MSA will continue to offer the Duo-Twin Airline Respirator as an alternative Constant Flow Supplied-Air Respirator that similarly features the use of air-purifying cartridges.

Please contact MSA Customer Service at 1-800-672-2222 if you have any questions.  Thank you for your cooperation and understanding.