These are brand new old stock dated 2019. 30 minute cylinders with 30 year shelf life. Thank you for looking.

The 3M Scott Safety SCBA Breathing Air Cylinder is a reliable and high-quality air supply option designed for public safety staff and rescue operations. With a pressure of 4500 psi and a 30-year shelf life, this cylinder provides a sufficient amount of breathable air for up to 45 minutes. Manufactured in the United States by the trusted brand SCOTT, this SCBA cylinder is a dependable choice for ensuring the safety and well-being of individuals in emergency situations.