Heavy-duty welded steel refrigerant tank tower safely and securely transports two 30-lb. and two 50-lb. refrigerant tanks. Each tier tilts down slightly for greater stability. Supplied rubber straps secure tanks. Units can be bolted to van ribs or floor, a shelving unit, or the bulkhead security partition. Towers are constructed of 1" square, 14-gauge steel tubing with powder coat finish.