CARBON CYLINDER
Scott Health & Safety Products: Constructed from strong, lightweight carbon composites fully wrapped around an ultra-thin aluminum liner. Available in 30-minute, 2,216-psi; and 30-, 45-, and 60-minute, 4,500-psi durations. DOT- and NIOSH-approved. NFPA-compliant with Scott Air-Pak Fifty/2.2/4.5. (704) 282-8400.