2B-24: Two-Place Basic Aviation Oxygen System 

Aluminum high pressure refillable cylinder, delivered empty 
680 liters/24 cu. ft. - 4.38" x 24.9" - weighs 7.4 lbs.

CGA-540 low profile valve with gauge and shut off

Adjustable flow regulator, 12 positions, 0 to 15 LPM, all brass interior

Splitter with connecting hose

2 Standard oxygen masks

2 Nasal cannulas

Cylinder duration at 10,000 ft: 7.5 hours w/standard mask @ 1.5 lpm

Oxymizer increases duration to 22.6 hours @ .5 LPM