For Sale 20 ft dia. Professional Weather Balloon, 600g

600g Professional Meteorological Weather Balloon, Project Aether brand. Diameter at release = 6 ft. Diameter at burst altitude = 20 ft. Volume at release = 50-100 cuft. Nominal Lift = 3.8 lbs. Maximum Lift = 12 lbs. Neck diameter = 2.8 inches. Neck length = 9 inches. Ascent rate = 1000 ft/min. Burst altitude = 100,000 ft. Material = Natural latex. Great for tethered and free-floating aeri