CATALINA MEDICAL OXYGEN TANK "B" SIZE ALUMINUM CYLINDER MADE IN USA SHIPS EMPTY (6 CF W/VALVE & TOGGLE) Capacity 6 cubic foot of oxygen Toggle operated CGA 870 oxygen pin index post valve DOT 3AL and TC 3 ALM, 2015 PSI cylinder 2.2 lbs empty weight 3.21 inch diameter x 11.6 inch length