50XCA06-24 Omnizone™ Air-Cooled Indoor Self-Contained Systems with Puron® Refrigerant (R-410A) 5 to 20 Nominal Tons 50XCA06-24 Omnizone™ Air-Cooled Indoor Self-Contained Systems with Puron® Refrigerant (R-410A) 5 to 20 Nominal Tons